In Yu-Gi-Oh! Zexal episode 11, titled "The Pack, Part 1" or "Yuma and Shark, the Tag Duel of Fate," Yuma and his former rival Shark are forced to team up against the villainous, duo-led group known as the "Pack". Together, they take on Scorch and Chills in a high-stakes 2-on-2 duel to protect Shark's "Number" card from being stolen by the opponents, who use powerful, themed decks and summon the Xyz monsters Number 61: Volcasaurus and Number 19: Freezadon.