Jiren the Gray is the strongest fighter in Universe 11 and a key member of the Pride Troopers, a superhero team that competed in the Tournament of Power. Whis has made bold claims about him—that he's essentially a mortal who could stand against a God of Destruction itself. Even Toppo, the Pride Troopers' leader, acknowledges Jiren as the most powerful in their universe.
His obsession with strength stems from a brutal childhood. When a villain attacked his home village, Jiren's parents were killed. A man found him and became his mentor, training him as he grew. Jiren eventually built a close circle of companions, and together they felt ready to face the villain when he inevitably returned. They were wrong. The confrontation went badly—his teacher and his companions were all defeated. What hurt most, though, was what came after: the surviving students he'd trusted abandoned him when he was at his weakest.
That experience shaped Jiren's entire philosophy. He came to see power as the only currency that mattered—that the weak existed only to obey the strong. It's the driving force behind everything he does and everything he's become.
Content compiled by AnimeList.moe from publicly available sources.