Mr. Frosty

Mr. Frosty is a reoccurring mid-boss who first debuted in Kirby's Adventure who specializes in ice attacks. Inhaling him originally yielded the Freeze ability in both Kirby's Adventure and its enhanced remake, but since Kirby's Dream Land 2, he yields Ice instead.

Kirby's Adventure / Kirby: Nightmare in Dream Land
Mr. Frosty appears as a midboss for both Kirby's Adventure and Kirby: Nightmare in Dream Land. He attacks by throwing ice blocks at Kirby and ramming into him. He yields the Freeze ability rather than Ice when inhaled and swallowed by Kirby.

Kirby's Dream Land 2
Mr. Frosty appears as a mid-boss for this game. The behavior and attack patterns are the same as Kirby's Adventure (albeit the only difference is the ice block Mr. Frosty attacks Kirby with grants Ice as well, and not just the said mid-boss himself). This is also the first game where Mr. Frosty now yields Ice instead of Freeze.