Roberto Da CostaRoberto da Costa is the son of Brazilian millionaire Emmanuel da Costa and his American wife Nina, an archaeologist.
Roberto first manifested his superhuman mutant powers when, at the age of fourteen, he was playing in a championship soccer match for his school team in Rio de Janeiro. Motivated by racial hatred, a boy named Keller and another member of the opposing team knocked da Costa to the ground. The hot-tempered da Costa retaliated by tackling Keller, who began brutally beating him. It was then that, without being aware of what was happening to him, da Costa first manifested his superhuman strength. His body and clothing temporarily turned black in the process, and he inadvertently hurled Keller away from him. Confused and frightened, da Costa sought help, but both the other players and most of the spectators panicked and fled. However, his girlfriend, Juliana Sandoval, who had been watching the game along with Emmanuel, stood by Roberto in his time of need.
Roberto's powers came to the attention of Donald Pierce, the renegade White Bishop of the Inner Circle of the Hellfire Club. Pierce sought to murder any superhuman mutants he could find. Pierce's mercenaries failed to abduct Roberto, but kidnapped Juliana instead. The mutant telepath, Professor Charles Xavier, founder of the X-Men, had learned of Pierce's plan to kill Roberto and sent his colleague, Dr. Moira MacTaggert, and the young superhuman mutants, Karma and Mirage, to help da Costa.
Roberto agreed to meet with Pierce's men in order to obtain Sandoval's release, but the mercenaries refused to free her and intended to kill both of them instead. During a fight one of the mercenaries fired at da Costa, who had returned to normalcy again, but Juliana leaped in front of da Costa, taking the fatal bullet herself. Anguished with guilt that Juliana had died protecting him, da Costa vowed to take vengeance on Pierce. Bobby joined Karma, Prof. Xavier, and another young mutant, Wolfsbane, in tracking down Pierce and they succeeded in defeating him.
da Costa agreed to stay with Prof. Xavier and received training in the use of his superhuman powers as a member of the New Mutants, even when it was later discovered that Professor had originally created the because the had been possessed by a Brood Queen egg inside of him seeking young mutants for future embryos. In the Xavier's School for Gifted Youngsters, the New Mutants were tutored by Professor X and trained in the use of their powers in the Danger Room. A founding member of the New Mutants, Bobby was a mainstay of the junior team for most of its existence and became best friends with his teammate Samuel Guthrie (Cannonball).
Meanwhile, Bobby’s father was contacted by the Hellfire Club and became a member of its secret Inner Circle under the alias of White Rook. He was the only person in the Inner Circle without superhuman powers. His performance in that role was almost unnoticed.
Later, during a trip to Asgard, Bobby gained a job as security in a tavern. After lifting Volstagg over his head, he befriended the Warriors Three. Bobby seriously entertained the idea of staying, as heroes were honored and worshiped in Asgard and he was hated and feared as a mutant on Earth.
source: http://www.angelfire.com/comics/benriely/
http://marvel.wikia.com/Roberto_da_Costa_%28Earth-616%29
http://www.comicvine.com/sunspot/4005-4644/