What fictional Marvel Comics superhero team uses the Leapfrog as their main transportation?
Leapfrog (comics):  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. Chase Stein: Chase Stein (also known as Talkback), is a fictional character, a superhero in the Marvel Comics "Runaways".
primary mode of transportation for the Runaways.