A relatively short-lived (1999-2001) range of LEGO Technic figures, Spiritual Successor of the Slizers and forerunner of Bionicle. Sandwiched in between these two considerably more popular lines, many people consider Robo Riders to be a failure, although that's not to say it doesn't have something of a fanbase of its own. The sets were, essentially, Cool Bikes with Elemental Powers that came in six distinct colorations, based on those elements. Each figure had a set of varied weapons, but the main gimmick was that their front wheels could be used as projectiles. And so they defeated the virus.