From WiKirby, your independent source of Kirby knowledge.
Boxy is a Mid-Boss that appears in two games: Kirby & The Amazing Mirror and Kirby: Squeak Squad. It resembles a bright pink present box with a red bow on top of it and a vine growing from the bottom, which ends in two green leaves. It possesses two oval eyes and a large mouth with sharp teeth, which can cause damage to Kirby. Sometimes, it creates boxes that contain bubbles, enemies, or power-ups.
In both of its appearances, Boxy gives the Magic ability when inhaled and swallowed after its defeat.
Super Smash Bros. Brawl
Boxy appears as a collectable sticker in this game. When used in The Subspace Emissary, it will grant +24 to bite attacks. It only works for Yoshi, Wario, Wolf and Pokémon Trainer, however.