Abel is Isaac's favorite Innocent Devil and a Devil-Type. He's at the final form of a Devil-Type, The End. He's used in the first battle with Isaac, and later when Trevor fought Isaac and was injured. It's unknown what happened to him after that. He is silver, while Hector's Devil-Type is golden, showing that he's the opposite of Hector's Devil, as with Isaac and Hector being rivals and opposites.