alienambiguous_genderanusbig_anusblackmesajoe_(artist)blue_anusbuttclothedclothingduoerectionfaceless_characterfaceless_maleferalgargantua_(half-life)genitalsgordon_freemanhalf-lifeheart_symbolhi_reshuge_anushumanhumanoid_genitaliahumanoid_penisinterspeciesmalemale/malemammalmonsterpartially_clothedpenispower_bottompuffy_anussize_differencevalvevalve_corporationxenophilia