Jay is a subspecies of human that produces way too much determination. They have the genocidal stabby stabby instincts of the Chara but the immense pacifist tendencies of a Frisk. Jays can never die forever, in fact, death is a part of their reproductive cycle. They use their metric butt ton of Determination to revive themselves upon death, which, due to determination's evil nature, creates offspring, fully grown and really nasty because of the stabby stab instincts of a Chara. They mumble about talking flowers. How silly, talking flowers. Everyone knows Flowey has little to no power besides strangling people to the point of asphyxiation with his vines.