Super Smash Bros. Ultimate: Challenger Pack 1 introduces Joker from the Persona series as a new playable fighter, enhancing the gameplay with his unique abilities. This pack not only features Joker, who utilizes a knife and gun in combat, but also includes the Mementos stage, which dynamically changes colors based on the music track from the Persona series that is playing. Players can enjoy a variety of new music tracks that further enrich the gaming experience.

Joker's gameplay mechanics are centered around the Rebellion Gauge, which powers up his attacks when filled, allowing for strategic play. The addition of this character and stage diversifies the roster and provides new challenges for players. Challenger Pack 1 is available as a standalone purchase or as part of the Fighters Pass, offering great value for fans of the game.