Roadrunner (Cliff ?) is a speedster who hangs out with the Good Ol' Boyz. He's not supposed to be that fast for a speedster, being slower than Scrambler.
He, Fantastico and Conduit mix it up with the Syndicate goons that crash the Halloween party.
He's part of the Good Ol' Boyz plot to blackmail Phase and She-Beast.
He gets injured by Minefield's bombs when the trap they were preparing for Phase is discovered and neutralized.