Aquanauts

Crank and Al are robots on the run. They arrive at Tarka, an ancient flooded city behind a great wall. Hoping to discover Robotika, where robots can be free, instead they end up trapped between the mysterious underwater Aquanauts and the cruel Codilus. Fast-paced and exciting, this series also has very endearing characters in the form of Crank, Al, and friends. This series has both boy and girl appeal—think Futurama for kids! They also include wonderfully dynamic and detailed illustrations from Mark Oliver. There are currently six books in the Robo-Runners series: The Tin Man, Tunnel Racers, Razorbites, Powerball, The Ghost Sea, and Aquanauts.