1:1 alternate_universe animated_skeleton bone english_text lizheru not_furry papyrus_(underfell) papyrus_(undertale) sans_(undertale) skeleton text undead underfell undertale undertale_(series)
1:1 alternate_universe animated_skeleton bone english_text lizheru not_furry papyrus_(underfell) papyrus_(underswap) sans_(underswap) skeleton text undead underfell underswap undertale undertale_(series)
1:1 alternate_universe animated_skeleton blood bodily_fluids bone english_text lizheru not_furry papyrus_(underfell) sans_(underfell) skeleton text undead underfell undertale undertale_(series)
1:1 alternate_universe animated_skeleton bone english_text lizheru not_furry papyrus_(underfell) profanity sans_(underfell) skeleton text undead underfell undertale undertale_(series)
absurd_res alternate_universe animated_skeleton balls bone genitals hi_res humanoid humanoid_genitalia humanoid_penis male masturbation not_furry papyrus_(underfell) papyrus_(undertale) penile penile_masturbation penis redeyedgazer skeleton solo tongue undead underfell undertale undertale_(series)
animated_skeleton blush bone bottomwear clothed clothing erection genitals gloves glowing glowing_genitalia glowing_penis grin handwear hi_res holding_leash holding_object holding_penis leash licking licking_lips looking_at_viewer male open_bottomwear open_clothing open_pants pants papyrus_(underfell) papyrus_(undertale) penis penis_poking_out penis_through_fly scar scarf shirt skeleton smile theyaois_(artist) tongue tongue_out topwear undead undertale undertale_(series)
2016 2_frame_animation alternate_universe animated animated_gif animated_skeleton bone clothed clothing digital_media_(artwork) empty_eyes fangs half-length_portrait head_bob heart_symbol jacket papyrus_(underfell) papyrus_(underswap) pixel_(artwork) pixel_animation portrait short_playtime simple_background skeleton swapfell sweater teeth topwear turtleneck undead undertale_(series) vschs
2023 alternate_universe ambiguous/ambiguous ambiguous_gender animated_skeleton belt belt_harness bestiality black_bottomwear black_clothing black_pants bodily_fluids bone boots bottomwear brown_markings canid canine canis claws clothing collar cropped_ears cross-popping_vein digital_media_(artwork) dobermann domestic_dog ear_piercing entangled facial_scar fangs feral footwear frown gloves group handwear hat headgear headwear hi_res humanoid humanoid_on_feral imminent_bestiality imminent_rape imminent_sex leash looking_at_another male_(lore) mammal markings not_furry_focus orange_sclera pants papyrus_(underfell) pawpads piercing pinscher pupils reignbeaux13 rib_cage saliva saliva_on_tongue saliva_string scar shoes skeleton slit_pupils smile soul_(undertale) teeth tongue tongue_out undead underfell undertale undertale_(series) uniform watermark zipper zipper_pull_tab
1:1 2021 alternate_universe animated_skeleton assisted_exposure balls black_sclera bodily_fluids bone boots butt clothing cross-popping_vein crossgender digital_media_(artwork) disembodied_vulva duo fangs female footwear frown genitals gesture gloves hand_gesture handwear hi_res high_heeled_boots high_heels holding_clothing holding_object humanoid imminent_rape imminent_sex jerry_(undertale) male male/female middle_finger monster mtf_crossgender not_furry papyrus_(underfell) penile_spines penis penis_tentacles perineum pink_penis pupils purple_body red_boots red_clothing red_footwear reignbeaux13 restrained rib_cage scarf shoes skeleton soul_(undertale) spikes spikes_(anatomy) spread_vulva spreading sucker_(anatomy) suckers sweat sweatdrop teeth tentacles torn_clothing undead underfell undertale undertale_(series) vein veiny_penis veiny_tentacles vulva watermark white_pupils
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