Renn Kousaka (香坂 連 Kōsaka Ren) is Go-On Blue (ゴーオンブルー Gōon Burū) of the Go-Ongers. Nicknamed the "Cyclopedia" for his attention to the smallest detail, is a former bus driver who tends to be somewhat talkative. His mecha is Engine Bus-on. His Power Rangers: RPM counterpart is Flynn McAllistair, the Blue RPM Ranger.