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RULE34.DEV

Boss Monster (Undertale) Rule 34 Image

Fennec (Artist) Rule 34 Image

Stars (Sky) Rule 34 Image

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ID

27200679660

Provider

e621

Score

37

Date

9mo1/14/2026

Dimensions

2500×2500

Media

Still image

Tag count

99

1:1 79459 absurd_res 938606 hi_res 2594401 ahegao 78445 ambiguous_gender 110282 anthro 2993277 anthro_penetrated 112304 aroused 69200 aroused_by_another 306 aroused_face 8547 aroused_female 3225 big_breasts 3473479 big_penis 1363797 bodily_fluids 1055689 bodily_fluids_in_mouth 675 body_worship 673 boss 1761 bovid 92994 breasts 7962276 caprine 72400 crotch_in_face 13 dominant 87270 dominant_human 1985 dominant_male 72894 duo 1321503 erection 1698659 eyebrows 226721 faceless_character 54756 faceless_male 244732 fellatio 696475 female 10027910 female_anthro 43850 genital_fluids 829226 genital_worship 160 genitals 1759752 goat 65962 grabbing_head 7802 half-closed_eyes 269780 hand_on_head 93170 holding_head 13745 human 1276108 human_on_anthro 104261 humanoid 462999 internal 56795 internal_oral 1326 interspecies 483746 kneeling 329701 kneeling_oral_position 17498 larger_anthro 12917 larger_female 94159 licking 260991 looking_at_another 200881 looking_pleasured 287633 male 6270610 male/female 807823 male_human 13152 mammal 2204552 mature_female 410452 monster 195812 monster_girl_(genre) 3914 monstrous_humanoid 1784 narrowed_eyes 190780 nude 3700410 nude_anthro 28516 nude_female 947180 nude_male 336475 oral 889770 oral_only 974 oral_penetration 80111 overweight 191796 penetration 1258179 penile 365904 penile_penetration 133785 penis 5268296 penis_in_mouth 35721 penis_lick 41475 pubes 165517 pubes_exposed 2797 seductive 333051 sex 2843086 size_difference 543748 slightly_chubby 93536 slightly_chubby_anthro 4959 slightly_chubby_female 8056 submissive 114688 submissive_anthro 9296 submissive_female 93259 sucking 99332 swallowing 18430 swallowing_penis_while_deepthroat 3149 swallowing_sound_effect 232 tall 6906 teratophilia 6218 thick_eyebrows 32636 tongue 1425069 boss_monster_(undertale) 2398 toriel 22135 undertale_(series) 64329 thedarktert

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OriginalOpen source file

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Resume playbackReturn to where you stopped

Auto Next5s img · on video end

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Details

Boss Monster (Undertale) Rule 34 Image

ID

27200679660

Provider

e621

Score

37

Date

9mo1/14/2026

Dimensions

2500×2500

Media

Still image

Tag count

99

Tags

1:1 79459 absurd_res 938606 hi_res 2594401 ahegao 78445 ambiguous_gender 110282 anthro 2993277 anthro_penetrated 112304 aroused 69200 aroused_by_another 306 aroused_face 8547 aroused_female 3225 big_breasts 3473479 big_penis 1363797 bodily_fluids 1055689 bodily_fluids_in_mouth 675 body_worship 673 boss 1761 bovid 92994 breasts 7962276 caprine 72400 crotch_in_face 13 dominant 87270 dominant_human 1985 dominant_male 72894 duo 1321503 erection 1698659 eyebrows 226721 faceless_character 54756 faceless_male 244732 fellatio 696475 female 10027910 female_anthro 43850 genital_fluids 829226 genital_worship 160 genitals 1759752 goat 65962 grabbing_head 7802 half-closed_eyes 269780 hand_on_head 93170 holding_head 13745 human 1276108 human_on_anthro 104261 humanoid 462999 internal 56795 internal_oral 1326 interspecies 483746 kneeling 329701 kneeling_oral_position 17498 larger_anthro 12917 larger_female 94159 licking 260991 looking_at_another 200881 looking_pleasured 287633 male 6270610 male/female 807823 male_human 13152 mammal 2204552 mature_female 410452 monster 195812 monster_girl_(genre) 3914 monstrous_humanoid 1784 narrowed_eyes 190780 nude 3700410 nude_anthro 28516 nude_female 947180 nude_male 336475 oral 889770 oral_only 974 oral_penetration 80111 overweight 191796 penetration 1258179 penile 365904 penile_penetration 133785 penis 5268296 penis_in_mouth 35721 penis_lick 41475 pubes 165517 pubes_exposed 2797 seductive 333051 sex 2843086 size_difference 543748 slightly_chubby 93536 slightly_chubby_anthro 4959 slightly_chubby_female 8056 submissive 114688 submissive_anthro 9296 submissive_female 93259 sucking 99332 swallowing 18430 swallowing_penis_while_deepthroat 3149 swallowing_sound_effect 232 tall 6906 teratophilia 6218 thick_eyebrows 32636 tongue 1425069 boss_monster_(undertale) 2398 toriel 22135 undertale_(series) 64329 thedarktert

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