User blog comment:Drakan95/RoboCop vs Inspector Gadget. Epic Rap Battles: Cartoons vs History. Season 2/@comment-9623756-20180317122029

Wally West vs Usain Bolt? I know Flash vs Bolt is a bit generic, but I think WW from Young Justice is one not used very often, and his banterous sort of persona would mesh well with Usain and his own p[ersonality.