Real Name: John Proudstar
Mutant Power(s): Enhanced strength, speed, and agility.
Group Affiliation: Exiles (former) X-Men (our Earth)
Exiles Issue No. 1 Bio: "He is John Proudstar. Thunderbird. Hand-picked by Professor X to join his second incarnation of the X-Men. Proven to be a formidable warrior with a spirit only matched by his strength. It is unknown which of these qualities captured the attention of Apocalypse. He (Thunderbird) was made a disciple. Enhanced, reformed, remade. If one were to ask John Proudstar about that day, he would say it was the day he was murdered. But no one ever asks. His servitude was short-lived. And his indomitable spirit, tortured into rage, set him free. He returned to the X-Men, but not as the same man. His whole life, Thunderbird sought to find a personal peace and a justification for his existence. Now he is further away from the answer than ever."
Purpose in Exiles: John Proudstar has to correct the wrinkle in time in which he stayed a servant to Apocalypse and did not rebel.