FURVERT!

2011 alpha_channel artificial_intelligence blonde_hair clothing crossover cutie_mark delthero earth_pony equid equine fact_core_(portal) feathered_wings feathers female feral feralized green_hair group hair hasbro hat headgear headwear horn horse long_hair machine male mammal my_little_pony mythological_creature mythological_equine mythology pegasus personality_core_(portal) pink_hair ponification pony portal_(series) quadruped rick_the_adventure_core_(portal) robot short_hair simple_background space_core_(portal) tail transparent_background unicorn valve valve_corporation white_clothing white_hat white_headwear wings

alternate_species blue_body blue_feathers blue_hair crossover duo equid equine feathered_wings feathers female feral friendship_is_magic hair hasbro horn horse kl0ndike long_hair machine mammal my_little_pony mythological_creature mythological_equine mythology personality_core_(portal) pony portal_(series) princess_celestia_(mlp) princess_luna_(mlp) robot robotization simple_background tail valve valve_corporation white_background winged_unicorn wings

1_eye 2011 achievement achievement_overlay achievement_unlocked alpha_channel artificial_intelligence awkwardzombie big_eyes biped black_body blue_eyes blue_text blue_text_box border chell colored comic commentary confetti dialogue digital_media_(artwork) duo english_text eye_contact female female_human gameplay_mechanics grandfathered_content hi_res human humor katie_tiedrich larger_male looking_at_another looking_down looking_down_at_another looking_up_at_another machine male male_non-humanoid_machine mammal non-humanoid_machine not_furry orb_robot outline personality_core_(portal) portal_(series) robot shaded size_difference smaller_female smaller_human solo_focus text the_truth toony transparent_border valve valve_corporation wheatley white_body

alpha_channel anthro balls black_hair bodily_fluids breasts cum cum_in_mouth cum_inside deep_throat digital_media_(artwork) dildo disney disney's_aladdin duo erection felid fellatio female female_focus genital_fluids genitals hair humanoid_genitalia humanoid_penis looking_at_viewer male male/female mammal mirage_(disney) nipples non-euclidean_sex oral oral_penetration penetration penile penis portal portal_penis portal_ring portal_sex precum r!p sex sex_toy solo_focus thinking_with_portals

2011 4_breasts after_transformation animal_genitalia animal_penis arthropod bee blackshirtboy blue_body blue_skin bodily_fluids breasts butt clothing comic corruption_of_champions demon equine_genitalia equine_penis erection fingering fingering_self footwear gender_transformation genitals heart_symbol herm hi_res high_heels horn human_to_humanoid humanoid humanoid_pointy_ears humor hymenopteran insect intersex lactating male masturbation milk mth_transformation mti_transformation multi_breast nipples non-mammal_breasts non-mammal_nipples penis pointy_ears portal shoes solo species_transformation the_truth transformation unusual_anatomy unusual_genitalia_placement unusual_vulva_placement vaginal vaginal_masturbation vulva vulva_nipples what

alternate_species aperture_science artificial_intelligence bodysuit brown_body brown_hair chell clothing crossover cutie_mark detailed_background equid equine female feral hair hasbro horn horse long_hair machine mammal my_little_pony mythological_creature mythological_equine mythology neonsupertails personality_core_(portal) ponification pony portal portal_(series) portal_gun quadruped robot sentry_turret_(portal) short_hair skinsuit solo tail test_chamber tight_clothing toony turret turret_(portal) unicorn valve valve_corporation

3:2 blue_body blue_feathers blue_hair buttercup_saiyan crossover crown earth equid equine feathered_wings feathers female feral friendship_is_magic hair hasbro headgear hi_res horn long_hair mammal moon my_little_pony mythological_creature mythological_equine mythology on_the_moon parody planet portal_(series) princess_luna_(mlp) quadruped simple_background solo space tail toony valve valve_corporation winged_unicorn wings

alpha_channel anthro aperture_science bottomwear box bread canid canine canis clothing computer container domestic_dog electronics food hat headgear headwear laptop male mammal pants portal_(series) shirt simple_background solo super-tuler tail toast topwear transparent_background valve valve_corporation

anthro clothed clothing dipstick_tail door duo female flat_chested markings multiplayer portal_(series) portal_gun tail tail_markings valve valve_corporation walking yoka_neko young young_anthro

2011 anthro bethesda_game_studios biped blizzard_entertainment blush bovid bovine breasts canid canine canis clitoris dildo domestic_cat domestic_dog felid feline felis female genitals heart_symbol horn inanimate_object lying machine mammal masturbation melee_weapon microsoft monochrome nude on_front on_side penetration portal_(series) sex_toy sketch skidd skyrim solo spread_legs spreading sword tail tauren the_elder_scrolls toying_self turret vaginal vaginal_masturbation vaginal_penetration valve valve_corporation vulva warcraft weapon weighted_companion_cube

4_missing_limbs anthro arm_in_portal balls bdsm bodily_fluids bondage bound buttplug buttplug_tail canid canine cum disability disembodied_penis disembodied_tail endium fake_tail fox fully_bound gag genital_fluids genitals helpless knot leg_in_portal male mammal nude penis plug_(sex_toy) portal portal_amputated_bodyparts_in_view portal_amputation portal_gag portal_penis portal_ring quadruple_amputee_portal sex_toy shadowfox13 solo stump_cap submissive submissive_male tail thinking_with_portals

all_fours ambiguous_knotting ambiguous_penetration animal_humanoid anthro ass_to_ass barefoot bed bedroom blue_body blue_fur blue_hair breasts canid canine capcom cat_humanoid claws clothing crossover darkstalkers dialogue duo english_text feet felicia_(darkstalkers) felid felid_humanoid feline feline_humanoid female female/female fox fur furniture gloves green_eyes hair handwear heart_symbol humanoid humanoid_on_anthro humor inanimate_object inside interspecies joke knotting krystal_(star_fox) long_hair looking_back mammal mammal_humanoid mario_bros nintendo nipples nude on_bed penetration portal portal_(series) princess princess_peach raised_tail royalty sex short_hair star_fox tail text toe_claws unknown_artist valve valve_corporation weighted_companion_cube white_body white_fur

animated animated_gif blue_body blue_feathers blue_hair cartwheel crossover equid equine eyes_closed feathered_wings feathers female feral friendship_is_magic hair hasbro horn long_hair loop mammal my_little_pony mythological_creature mythological_equine mythology portal portal_(series) princess_luna_(mlp) quadruped short_playtime simple_background solo tail unknown_artist valve valve_corporation winged_unicorn wings

ask_blog ask_princess_molestia comic cutie_mark dialogue earth_pony english_text equid equine eyewear fan_character feathered_wings feathers female female/female feral friendship_is_magic glasses hair hasbro hi_res horn horse john_joseco long_hair mammal mayor_mare_(mlp) my_little_pony mythological_creature mythological_equine mythology pony portal princess princess_celestia_(mlp) princess_molestia quadruped royalty tail talking_feral text tumblr winged_unicorn wings

2011 anthro artist_name breasts clothed clothed_anthro clothed_female clothing dated detailed_background domestic_cat felid feline felis female front_view fully_clothed fully_clothed_anthro fully_clothed_female half-closed_eyes hi_res lidded_eyes looking_away looking_down mammal monk_wolf narrowed_eyes portal portal_(series) shaded solo standing text toony valve valve_corporation

16:9 animated anthro apple armor arrow_(weapon) bed bill_(left_4_dead) block blood bodily_fluids bow_(weapon) building chell city clock clothing costume crossover crown destruction dialogue diamond_(gem) diamond_sword digital_media_(artwork) english_audio english_text eulipotyphlan explosion explosives eyes_closed falconer02 fart_garfunkel female fire flash flower food fruit fur furniture gaylord_steambath gem ghast_(minecraft) glass gold_(metal) golden_sword half-life half-life_2 headgear hedgehog house human human_focus humor ladder lava left_4_dead_(series) louis_(left_4_dead) male mammal mario mario_bros melee_weapon microsoft minecart minecraft mojang newgrounds nintendo not_furry_focus painting_(object) plant pooploser_69 portal portal_(series) pwny_rainb0w railway_track ranged_weapon sega sleeping sonic_the_hedgehog sonic_the_hedgehog_(series) sound sparkles star_trek sunrise sword text the_nether_(minecraft) tnt town undead valve valve_corporation vault_boy voice_acted wallace_breen watch water weapon widescreen windmill wool_(fur) xbox_game_studios

4_missing_limbs anal anal_penetration anal_sheath anus autopenetration black_border border bound butt comic dragon duo endium endium_(character) english_text erection fully_bound genitals horn involuntary_self_penetration latex male masturbation mythological_creature mythological_scalie mythology non-euclidean_masturbation penetration penis portal portal_amputated_bodyparts_in_view portal_amputation portal_autopenetration portal_masturbation portal_penis portal_ring quadruple_amputee_portal scalie sensory_deprivation sex sex_toy slave strapped_in_toy stump_cap text thelonelydragon thinking_with_portals tiemeth toying_partner what what_has_science_done

2011 ambiguous_gender artificial_intelligence brown_wantholf creeper_croue dialogue duo ellipsis english_text flirting machine not_furry pick-up_line portal portal_(series) prima_donna_turret_(portal) robot sentry_turret_(portal) text turret turret_(portal) valve valve_corporation

alice_in_wonderland anthro artificial_intelligence beverage black_hair blonde_hair blue_body blue_feathers bow_(feature) bow_tie cb129 chimera clothing comedy_central container crossover cup deity discord_(mlp) disney draconequus english_text feathered_wings feathers feral food friendship_is_magic furniture futurama group hair hare hasbro hat headgear headwear human humanoid hypnotoad lagomorph lamp larger_anthro larger_feral larger_human larger_humanoid larger_male lava_lamp leporid machine mad_hatter_(disney) male male_anthro male_humanoid male_non-humanoid_machine mammal membrane_(anatomy) membranous_wings microsoft my_little_pony non-humanoid_machine open_mouth orb_robot personality_core_(portal) portal portal_(series) q_(star_trek) robot rubik's_cube saucer sheogorath size_difference smaller_human smaller_humanoid smaller_male space_core_(portal) star star_trek table tea tea_cup teapot text the_elder_scrolls valve valve_corporation wabbajack white_hair wings

2011 autofellatio bodily_fluids cum cum_in_mouth cum_in_own_mouth cum_in_self cum_inside cum_on_face cum_on_own_face cum_on_self dragon erection european_mythology feral genital_fluids genitals male masturbation membrane_(anatomy) membranous_wings mythological_creature mythological_scalie mythology neltruin non-euclidean_masturbation oral oral_masturbation oral_penetration penetration penile penile_masturbation penis portal portal_(series) portal_autofellatio portal_masturbation red_body red_scales scales scalie simple_background solo tail thinking_with_portals valve valve_corporation western_dragon wings

4:5 android aperture_science artificial_intelligence atlas_(portal) dragon duo female hug machine male male/female membrane_(anatomy) membranous_wings mythological_creature mythological_scalie mythology p-body_(portal) portal portal_(series) portal_gun robot scalie tail urnam7 valve valve_corporation wings

2011 anthro bethesda_game_studios black_border border comic english_text felid female haskill_(skyrim) katia_managan khajiit mammal masonthekiller microsoft oblivion portal prequel_adventure sheogorath text the_elder_scrolls

2012 anthro arrow_pointing_to_crotch black_nipples breasts camera cellphone claws digital_media_(artwork) directional_arrow dragon electronics female fur fur_gauntlets furred_dragon furred_scalie genitals grin heart_symbol hi_res inanimate_object mythological_creature mythological_scalie mythology nhala_levee nipple_piercing nipples non-mammal_breasts non-mammal_nipples nude paws perspective phone piercing portal_(series) scalie selfie smile solo spread_legs spreading tail thefuckingdevil valve valve_corporation vulva weighted_companion_cube whiskers

absurd_res anthro blue_eyes bodily_fluids bronybrad comic crossover crying cutie_mark dialogue dragon earth_pony english_text equid equine feathered_wings feathers female feral friendship_is_magic green_eyes group hair hasbro hi_res horn horse letter long_image male mammal multicolored_hair my_little_pony mythological_creature mythological_equine mythological_scalie mythology pink_hair pinkie_pie_(mlp) pony portal_(series) princess princess_celestia_(mlp) quadruped royalty scalie spike_(mlp) tail tall_image tears text valve valve_corporation white_body white_feathers winged_unicorn wings young young_anthro

autofellatio balls big_breasts blizzard_entertainment breasts draenei erection genitals gynomorph hooves horn huge_breasts humanoid intersex masturbation nipples non-euclidean_masturbation nude oral oral_masturbation oral_penetration penetration penile penile_masturbation penis portal portal_(series) portal_autofellatio portal_masturbation solo spread_legs spreading text thinking_with_portals ultrafem url valve valve_corporation warcraft

absurd_res ambiguous_gender crossover equid equine feral friendship_is_magic glados hasbro hi_res horse machine mammal my_little_pony pink_background pinkie_pie_(mlp) ponification pony portal portal_(series) robot robot_feral robotization simple_background solo text text_background valve valve_corporation xxpoizenxx

2012 absurd_res ambiguous_gender companion_pony crossover equid equine fan_character feral grey_background hasbro heart_symbol hi_res horse machine mammal my_little_pony pink_background ponification pony portal_(series) robot robot_feral simple_background solo text text_background valve valve_corporation weighted_companion_cube xxpoizenxx

ambiguous_gender anthro artificial_intelligence comic domestic_ferret duo english_text foxia glados humor machine mammal monochrome mustelid musteline portal_(series) question_mark robot text true_musteline valve valve_corporation weasel

4:3 animated crossover derpy_hooves_(mlp) duo equid equine feathered_wings feathers female feral flash friendship_is_magic fur hair hasbro horn letter mailbox mammal multicolored_hair my_little_pony mythological_creature mythological_equine mythology pegasus portal_(series) portal_gun purple_body purple_fur purple_hair sound twilight_sparkle_(mlp) two_tone_hair unicorn valve valve_corporation wings wounded yudhaikeledai

2012 4:3 animated blinking book crossover duo earth_pony equid equine female feral flash friendship_is_magic fur hair hasbro horn horse library mammal multicolored_hair my_little_pony mythological_creature mythological_equine mythology pink_body pink_fur pinkie_pie_(mlp) pond pony portal_(series) portal_gun purple_hair sound twilight_sparkle_(mlp) two_tone_hair unicorn valve valve_corporation yudhaikeledai

4:3 animated apple_bloom_(mlp) applejack_(mlp) big_macintosh_(mlp) crossover earth_pony equid equine female feral flash friendship_is_magic group hasbro horn horse male mammal my_little_pony mythological_creature mythological_equine mythology oops physics pony portal_(series) portal_gun princess_luna_(mlp) sibling_(lore) sister_(lore) sisters_(lore) sound to_the_moon unicorn valve valve_corporation young young_feral yudhaikeledai

anthro aperture_logo canid canine canis chelsea_chamberlain clothing crossed_arms crossed_legs domestic_dog duo eyewear fox glasses jumpsuit karelian_bear_dog long_fall_boots male mammal orange_clothing orange_jumpsuit portal portal_(series) portal_gun red_button sitting sitting_on_ground spitz tehfizzle_(artist) valve valve_corporation zahndy

4_toes 5_fingers anthro barefoot black_and_white bulge canid canine canis chelsea_chamberlain clothed clothing collar costume dipstick_ears dipstick_tail domestic_dog duo ear_markings electronics eyewear feet fingers fox fully_clothed glasses hair heart_symbol holding_object inanimate_object jumpsuit karelian_bear_dog looking_at_another male mammal markings monochrome multicolored_ears multicolored_tail open_mouth portal_(series) reclining short_hair simple_background smile spitz standing tail tail_markings tehfizzle_(artist) toes usb valve valve_corporation weighted_companion_cube white_background zahndy

16:9 alternate_species ambiguous_gender aperture_logo aperture_science bound chell clothing coat digitigrade domestic_cat duo felid feline felis feral feralized footwear glados gryphelyse hi_res humor long_fall_boots mackerel_tabby mammal parody portal_(series) portal_gun quadruped shoes simple_background string tabby_cat tail tongue tongue_out topwear valve valve_corporation wallpaper whiskers widescreen wire yarn

1:1 achievement achievement_overlay achievement_unlocked blush comic_sans dark_theme duo english_text female genitals ghast_(minecraft) ghastie glowing heart_symbol hi_res implied_unbirth microsoft minecraft mojang monster nether_portal nether_realm one_eye_closed overlay portal slushy sound_effects spread_vulva spreading tentacles text tongue tongue_out vaginal vulva xbox_game_studios

ambiguous_gender black_body black_fur domestic_cat english_text felid feline felis feral fur gamercat_(character) heart_symbol inanimate_object low_res mammal portal_(series) samantha_whitten solo tail text the_gamercat url valve valve_corporation weighted_companion_cube

anthro big_breasts blue_hair blush breast_rest breast_squish breasts clothing eyewear female freckles fur glasses green_eyes hair heart_symbol hi_res house_mouse huge_breasts inanimate_object jasmine_(skidd) kerchief looking_at_viewer mammal mouse murid murine nipples nude portal_(series) rat rodent simple_background skidd solo squish tail valve valve_corporation weighted_companion_cube white_background white_body white_fur

4:3 animated blue_body blue_feathers crossover cutie_mark derpy_hooves_(mlp) equid equine feathered_wings feathers female feral flash friendship_is_magic fur grey_body grey_feathers group hair hasbro horn mammal multicolored_hair my_little_pony mythological_creature mythological_equine mythology pegasus portal_(series) purple_body purple_fur purple_hair rainbow_dash_(mlp) rainbow_hair sonic_rainboom sound twilight_sparkle_(mlp) two_tone_hair unicorn valve valve_corporation vehicle wheelchair wings yudhaikeledai

abstract_background ambiguous_gender artificial_intelligence computer crossover duo earth_pony electronics equid equine feral foxinshadow friendship_is_magic glados hasbro horse machine mammal my_little_pony pinkie_pie_(mlp) pony portal_(series) quadruped robot shadow silhouette simple_background tail valve valve_corporation

4:3 animated aperture_logo baked_goods black_forest_cake blue_body blue_feathers cake caroline_(portal) cave_johnson_(portal) crossover dessert earth_pony equid equine feathered_wings feathers female feral flash food friendship_is_magic group hasbro heart_eyes heart_symbol horn horse inanimate_object machine male mammal my_little_pony mythological_creature mythological_equine mythology ponification pony portal portal_(series) portal_gun princess princess_celestia_(mlp) princess_luna_(mlp) robot royalty sentry_turret_(portal) sibling_(lore) sister_(lore) sisters_(lore) sound the_cake turret turret_(portal) twilight_sparkle_(mlp) unicorn valve valve_corporation weighted_companion_cube weighted_storage_cube_(portal) white_body white_feathers winged_unicorn wings yudhaikeledai

after_anal after_anal_penetration after_sex ahegao all_fours anal anal_knotting anal_penetration angry angry_sex animal_genitalia animal_penis anus areola being_watched bestiality bestiality_humiliation big_breasts black_hair blood bodily_fluids bottomwear bottomwear_around_one_leg bottomwear_down breasts brown_areola brown_body brown_fur brown_nipples canid canine canine_genitalia canine_penis canis chell claw_marks clothed clothing clothing_around_one_leg collar collar_only comic commentary cum cum_drip cum_in_ass cum_inside cum_pool cutaway dialogue digitigrade dirty_talk discarded_clothing doggystyle domestic_dog dominant dominant_feral dominant_male dripping drooling duo_focus english_text erection eye_roll female female_human female_on_feral female_penetrated feral feral_penetrating feral_penetrating_female feral_penetrating_human from_behind_position fur gaping gaping_anus genital_fluids genitals glados group hair half-closed_eyes heart_symbol human human_on_feral human_penetrated humiliation indoor_nudity indoor_sex inside interspecies jumpsuit knot knotting lactating leaking leaking_anus leaking_cum looking_at_another looking_pleasured machine makeup male male/female male_on_human male_penetrating male_penetrating_female male_penetrating_human mammal markings mascara moan mole_(marking) mostly_nude mostly_nude_female mostly_nude_human narrowed_eyes navel nipples nude open_mouth open_smile orange_clothing orange_jumpsuit orgasm_face pants pants_around_one_leg partially_clothed partially_clothed_female partially_clothed_human penetration penile penile_penetration penis penis_in_ass plump_labia portal_(series) portal_gun pubes quadruped red_knot red_penis robot running_makeup running_mascara saliva scratch_mark scratches sex shadman shirt smile submissive submissive_female submissive_human tail tan_body tan_breasts tan_skin tan_vulva tank_top text tongue tongue_out topwear trio unknotting valve valve_corporation voyeur vulva white_collar

aperture_logo blonde_hair blue_eyes bridge building cake comic cutie_mark derpy_hooves_(mlp) dessert dialogue earth_pony english_text equid equine feathered_wings feathers female feral food friendship_is_magic hair hasbro hi_res horse house inside_train mammal my_little_pony mythological_creature mythological_equine mythology pegasus pinkie_pie_(mlp) pixelkitties plant pony portal portal_(series) portal_gun quadruped tail text the_cake_is_a_lie train tree valve valve_corporation vehicle wings wood yellow_eyes

3:4 anthro canid canine canis catmonkshiro cloud comic digital_media_(artwork) english_text female flashlight fox greece hourglass_(object) mammal mountain multi_tail mythological_canine mythological_creature mythology outside portal relic shai sky solo tail temple text time transformation vortex werecanid werecanine werecreature werewolf wolf

3:4 anthro bottomwear canid canine canis catmonkshiro claws clothing comic crescent_moon digital_media_(artwork) duo english_text female fox gloves handwear hourglass_(object) male mammal moon multi_tail mythological_canine mythological_creature mythology pants pillow portal shai tail tapestry teeth text time transformation vortex werecanid werecanine werecreature werewolf wolf

4:3 animated blue_body blue_feathers blue_fur crossover electricity equid equine feathered_wings feathers female feral flash fluttershy_(mlp) friendship_is_magic fur group hair hasbro horn lightning machine mammal multicolored_hair my_little_pony mythological_creature mythological_equine mythology pegasus portal_(series) portal_gun purple_body purple_fur purple_hair rainbow_dash_(mlp) rainbow_hair raining rarity_(mlp) sound turret twilight_sparkle_(mlp) two_tone_hair unicorn valve valve_corporation wings yellow_body yellow_feathers yudhaikeledai

agoodcitizen aperture_science blue_body blue_feathers english_text equid equine feathered_wings feathers female feral friendship_is_magic hair hasbro heart_symbol hi_res horn john_joseco mammal my_little_pony mythological_creature mythological_equine mythology portal_(series) princess_luna_(mlp) solo tail text tumblr url valve valve_corporation winged_unicorn wings

2012 alcohol angry_birds apple_bloom_(mlp) applejack_(mlp) arthropod avian beverage bird blonde_hair blue_body blue_eyes blue_feathers blue_fur blue_hair blush brown_body brown_fur brown_hair cake changeling_(mlp) chicken cider clothing confetti confetti_streamer crossover crown cutie_mark cutie_mark_crusaders_(mlp) derp_eyes derpy_hooves_(mlp) dessert doctor_whooves_(mlp) dragon earth_pony equid equine eyes_closed eyewear feathered_wings feathers female feral fluttershy_(mlp) food freckles friendship_is_magic fruit fur galliform glasses grape green_body green_eyes green_fur green_hair grey_body grey_fur group gummy_(mlp) hair hasbro hat headgear headwear hi_res horn horse inside long_hair long_image lyra_heartstrings_(mlp) mammal multicolored_hair my_little_pony mythological_creature mythological_equine mythological_scalie mythology one_eye_closed open_mouth orange_body orange_eyes orange_fur pegasus phasianid pink_body pink_fur pink_hair pinkie_pie_(mlp) plant pony portal_(series) portal_gun princess princess_cadance_(mlp) princess_celestia_(mlp) princess_luna_(mlp) pupils purple_body purple_eyes purple_fur purple_hair queen_chrysalis_(mlp) rainbow_dash_(mlp) rainbow_hair rarity_(mlp) record red_hair rovio_entertainment royalty saturnspace scalie scootaloo_(mlp) sega shining_armor_(mlp) short_hair slit_pupils spike_(mlp) sunglasses sweetie_belle_(mlp) teal_eyes tongue tongue_out trixie_(mlp) twilight_sparkle_(mlp) two_tone_hair unicorn valve valve_corporation vinyl_scratch_(mlp) white_body white_fur wide_image winged_unicorn wings yellow_body yellow_eyes yellow_feathers yellow_fur

blue_body blue_feathers blush crossover crown cutie_mark english_text equid equine feathered_wings feathers female feral friendship_is_magic hair hasbro headgear heart_symbol horn horse inanimate_object john_joseco mammal my_little_pony mythological_creature mythological_equine mythology pony portal_(series) princess_luna_(mlp) quadruped solo tail text tumblr url valve valve_corporation weighted_companion_cube winged_unicorn wings