Afterwards, Goku and his friends participate in a fighting tournament set between Beerus and his brother Champa,who is Universe 6's God of Destruction, facing the best warriors from Champa's universe. During this tournament, Goku reveals that he has learned to combine the perfect energy control of his Super Saiyan Blue form with his older technique, the "Kaiō-ken", creating a variation called "Kaiō-ken Blue". Although Goku gives up after fighting his opponent, Hit, his team ends up winning the tournament. After meeting with the omnipotent being known as Grand Zeno, Goku encounters an evil alternate version of himself called "Goku Black", who is terrorizing Future Trunks' timeline. Black is eventually revealed to be a rogue Supreme Kai in training named Zamasu, who has stolen Goku's body from yet another alternate timeline and teamed up with the Zamasu of Future Trunks' timeline to fulfill their "Zero Mortals Plan". After Zamasu and Black become even more dangerous by undergoing Potara Fusion during the battle in Future Trunks' timeline, Goku ultimately summons the future version of Grand Zeno who erases the entire universe and Zamasu. Goku and the others manage to escape in the time machine, and later Goku and Future Trunks use the time machine again to bring Future Zeno to the present timeline.