Asriel Dreemurr is a white, goat-like monster with a gentle demeanor, initially appearing as a young, playful child with a golden flower in his fur. As the son of Toriel and Asgore Dreemurr, he was once a cherished prince of the Underground. After a tragic turn of events involving the human souls, Asriel's soul merged with the remains of those souls, transforming him into the powerful and vengeful "Flowey" with a monstrous form. His deep-seated pain and confusion reflect the consequences of his tragic past, making him a complex figure of both innocence and torment.