Riverdale, the CW's gritty take on Archie comics, is full of beloved comic-book characters like Archie, Betty, Veronica, and Jughead. The show, which is much more dramatic when it comes to the lives of the Riverdale teens, also includes characters not seen in the comics, like Goree's Munroe "Mad Dog" Moore. Mad Dog debuted in season three and was last seen in season four and met Archie while they were both at the Leopold and Loeb Juvenile Detention Centre.