There is a bug in Super Smash Bros. for Nintendo 3DS that allows you to have characters really huge. If you play as Yoshi and continuously lay eggs (standard B move) at your opponent, your opponent will grow bigger each time. This glitch apparently only works in Multi-Man battles. It's unknown other characters can have this glitch, but so far, only Yoshi can perform this.
SSB3DS Giant Character Glitch【SSB4】
【スマブラ3DS】 ヨッシー巨大化バグ
SSB3DS Giant Character Glitch【SSB4】
【スマブラ3DS】 ヨッシー巨大化バグ