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Official Site: Marvel Comics

Chase Stein (also known as Talkback ), is a fictional character in the Marvel Comics award-winning series, 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. However, despite his rule-breaking persona, Chase is fiercely loyal to his friends and remains a valued member of the team. Chase shares a psychic and empathic link with deinonychus Old Lace, granting him the ability to command the dinosaur to do his bidding

The son of Victor and Janet Stein, Chase is first seen taking a punch from his abusive father for getting straight C's and being a "dumb athlete"; after the witnessing of the murder of an innocent girl by their parents ("the Pride"), Chase appears not to be surprised, though blames everyone else's parents for the murder. Chase joins the team in the mass ransack to escape from their respective homes. While going through Chase's parents homes, he discovers that his parents are mad scientists, with many technological advances. Able to conjure and mold fire with the gloves, Chase also steals the special x-ray goggles from his parents. The Fistigons are later destroyed, giving Chase the role of "getaway guy". Chase provides the Runaways with their first hideout, a dilapidated caved-in mansion he called "the Hostel," and their first transport, his white, unmarked van with stolen license plates. After running off, Chase wishes to take the name, Neo, but Gert calls him Talkback, a reference to his defiant nature. It is later revealed Janet's pregnancy with Chase prompted the remaining Pride to have kids, and to give them eternal life in continuing the Pride.

When Chase first confronts his parents (in their scientific villain-attire), Chase remains defiant and unafraid of his parents, firmly establishing himself as the most rebellious and reckless of the group, a trait he carries for the rest of Brian K. Vaughan's initial run on the title. Chase is portrayed as having a free, reckless spirit, shown when he purposely repeatedly crashes the Leapfrog.

Chase is known for having an angry temper; after the death of Gert, Chase departs the team for a time, with the intention of resurrecting Gert in exchange for selling his own life. The search for Victor Mancha ends up being personal for him, to kill the one person who'd be destined to murder Gert. Chase also mentions he had murdered someone in the past, and refuses to talk about it. An associate to the Kingpin describes him as being simple, despite his scientific pedigree.

Chase Stein has not been a contender in any CBUB matches.