Asriel Dreemurr

WARNING!!! PAGE MAY CONTAIN SPOILERS FOR THE GAME "UNDERTALE"!!! YOU HAVE BEEN WARNED!!!

Asriel Dreemurr is the biological child of Toriel and Asgore, as well as the adoptive brother of Chara. Asriel is Flowey's former self, prince of the Underground, and the final boss of the True Pacifist route.