Samael

Samael (also known as Warlord 101) is a furry artist who lives in Scotland. His fursona is a yellow dragon with a white chest and abdomen.

Much of Samael's artwork involves fat furs and vore.

So Sorry (Undertale cameo)
Wanting to support the development of the independent video game Undertale, Samael donated 1000$ for its kickstarter, getting the "Fan Troll" reward.

For this reason, his fursona appears in the video game as So Sorry, a hidden boss fight. He is the monster that can reward the player the most money in a single fight (300g) of the whole game. His boss fight is non-canon to the video game story, and looks more like an easter egg. His in-game name, appearance and design of some of his attacks as So Sorry were his ideas that the game creator Toby Fox used and developed.