Asriel

Asriel is a major character from Undertale. He also appears in Strawberry Getaway. His appearance in Strawberry Getaway is based on a combination of the Storyspin and Storyswap AUs.

Storyspin is an inverse of Storyshift, meaning that Asriel is in Napstablook's role. Storyswap is a combination of Storyshift and Underswap, meaning that Asriel is in Sans' role.