Nintendo has warned people not to use Mii Fighters in Super Smash Bros. Ultimate. A problem that ends online matches immediately when using them has arisen thanks to the Switch 2.

Nintendo has released Super Smash Bros. Ultimate ’s Version 13.0.4 update for June 2025, but Switch users should only expect a small patch. Super Smash Bros. Ultimate is one of the most well ...

Nintendo has updated its list of Switch 2 compatibility issues to request that Super Smash Bros. Ultimate owners refrain from using the Mii Fighter characters, as they're currently breaking the game.

Nintendo The 13.0.4 update for Super Smash Bros. Ultimate, released Tuesday, fixes a quirky bug with Mii Fighters and restores seamless online play between Switch and Switch 2 players.

Basically, if you're going to spend launch day with your Switch 2 playing Super Smash Bros. Ultimate, just don't pick Mii Fighters.

Super Smash Bros. Ultimate Super Smash Bros. Ultimate's Nintendo Switch 2 journey isn't going too smoothly as Nintendo asks "please avoid using Mii Fighter in online play as much as possible" News ...

Currently, Super Smash Bros. Ultimate features the Swordfighter, Brawler, and Gunner, but with such a diverse cast of characters, new classes of Mii Fighters should be added.