Forgottale Robby

Basically Robby was trapped in the void along with some other monsters which then made him king of the void so he was stuck there for 15 yrs so when he got out he destroyed the underground and the surface (this version of Robby is a tad bit weaker) but he let some of his family live (the peoplr who he let live: Rose, Serif, Glow, Peter, Jay Jay, Cathy and Rosey.)