"Similar to Toriel and Asgore, Asriel has long ears, a snout, and visible fangs. He wears a green, long-sleeved shirt with yellow stripes and black pants, similar to the First Human's clothing. He also has a small wisp of fur on his head and lacks horns unlike Asgore. Before his death, Asriel was a docile, unadventurous, and loving child. He cared for the First Human as a sibling, and he trusted them when they came up with a plan to escape the Underground that involved the human consuming buttercups." Undertale Wiki.

Assigned voice: Mac from Foster's Home for Imaginary Friends (Liam Neeson)