Juggernaut as Kuurth: The Juggernaut, a.k.a. Cain Marko, was a prisoner on The Raft when the Hammer of Kuurth crashed into it. Marko picked it up and was possessed by Kuurth, Breaker of Stone, becoming one of the seven Worthy.
Hulk as Nul: When a strange hammer landed near the Hulk, he picked it up and was transformed into Nul, Breaker of Worlds. As one of the Serpent's Worthy, Nul spread fear until he was knocked into orbit by Thor.