The Ultimate Marvel version of Sunspot a.k.a. Roberto da Costa is an angry vigilante mutant of Brazilian descent. Originally came from Harlem in this continuity, he sees the X-Men as decadent Uncle Tom figures and has accused them of living in an ivory tower, considering themselves separate from "second-class muties" like himself. He also harbors a deep hatred for Magneto and his followers because of the anti-mutant hysteria that followed the Brooklyn Bridge's destruction at the Brotherhood of Evil Mutants's hands.