ambiguous_gender animated arachnid arthropod being_watched bone brothers chara_(undertale) disembodied_hand ensoul female fish ghost glowing glowing_eyes hand_on_arm hand_on_head hand_on_shoulder machine male marine melee_weapon mettaton monster monster_kid papyrus_(undertale) pillar polearm protagonist_(undertale) robot sans_(undertale) sibling skeleton spear spider spirit tem temmie_(undertale) toriel undertale undyne undyne_the_undying video_games weapon