Go on traintastic adventures with the fastest trainee Koko, the green electric chugger! Build Koko and speed along the rails! Koko by Mega Bloks is totally buildable with a cool wheelbase and moving mouth. You can build & roll on the ground or ride the rails, all to recreate the adventures of Chuggington! Play with other Mega Bloks Chuggington characters Wilson, and Brewster, and other play sets for endless possibilities!