Rule 34 Dev - 1girl 2020s 2023 2d 2d_(artwork) anthro anthro_only armor armored_boots armored_gloves artist_name ass blue_body blue_skin breasts clothed clothed_female clothing crotch digital_media_(artwork) ear_fins eyepatch female_anthro female_only fins fish fish_girl full_body gauntlets hair head_fins holding_spear holding_weapon looking_at_viewer marine mekyo_(topotopo_0_0) monster monster_girl multiple_views non-mammal_breasts ponytail red_hair red_ponytail sharp_teeth simple_background slit_pupils solo_anthro solo_female spear standing standing_on_one_leg teeth twitter twitter_username two-tone_background undertale undertale_(series) undyne video_game_character video_games weapon white_background white_border yellow_sclera|1072584