"Fast Friends?!" Part 2 of 2. Guest-starring the Flash. Story by Ron Marz. Art by Paul Pelletier and Romeo Tanghal. The Scarlet Speedster and Emerald Knight must find away to work together if they're gonna save their cities from the destructive power of Sonar! NOTE: This 2-part story does a lot to set up the love/hate friendship of young Kyle Rayner and Wally West.