Sakurai said the roster will grow after the game's launch. If you pre-order Ultimate digitally, or register a physical copy through the My Nintendo service, you'll be given a download code for a special Piranha Plant fighter once it's complete. (Nintendo said the character should be ready in a couple of months.) In addition, Nintendo is planning some DLC packs that will include one fighter, one stage and multiple music tracks for $5.99. Fans can also purchase a Fighters Pass that includes five individual DLC packs, and a bonus Mii outfit based on Rex from Xenoblade Chronicles 2, for $24.99. "It may take a year or so to release all the DLC," Nintendo warned.

Maybe one of those packs will include Waluigi?