Question: Which character created by Brian K. Vaughan and Adrian Alphona has control of a vehicle in the form of a large frog?

Related documents: [0]  [DOC] The Leapfrog is a fictional vehicle appearing in American comic books published by Marvel Comics. The Leapfrog is the personal mode of transport for the superhero team Runaways. The ship takes on the form of a large frog. 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. 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. The Leapfrog doesn't actually fly; it "jumps" forward to move. [END] 
[1]  [DOC] Chase Stein (also known as Talkback), is a fictional character, a superhero in the Marvel Comics "Runaways". He was created by author Brian K. Vaughan & artist Adrian Alphona, and debuted in "Runaways" vol. 1 #1 with most of the other main characters. Like every member of the original Runaways, he is the son of evil villains with special abilities; in Chase's case, mad scientists. Chase is often regarded as the "wild card" in the series, due to his often changing role in the group, from being the getaway guy and technical guru to the "loose cannon" after he departed the group for a short while. However, despite his rule-breaking persona, Chase is fiercely loyal to his friends and remains a valued member of the team. Chase is the eldest of the Runaways at age 18. Chase shares a psychic and empathic link with deinonychus Old Lace, granting him the ability to command the dinosaur to do his bidding and also possesses the Fistigons, the world's most powerful gauntlets. [END]  
Answer: Chase Stein
Chase Stein