Originally created by Janet Stein and Victor Stein, the Leapfrog was used by the Pride when they had to perform their Rite of Thunder for the Gibborim. The Leapfrog was programmed with an Artificial Intelligence to be used as a user interface for those who do not know how to use the controls.
After the Pride was destroyed by the Gibborim, control of the Leapfrog rested with Chase Stein and has since been used as the primary mode of transportation for the Runaways. Leapfrog contains lasers which can be shot, with two settings: stun, and kill. The Leapfrog doesn't actually fly, it "jumps" forwards to move. The A.I. unit and Molly Hayes have since become "friends."