Mini Kirby is one of Kirby's copy abilities. It has so far only appeared in Kirby & the Amazing Mirror. It can only be obtained from a Minny.
Abilities
As Mini Kirby, Kirby is shrunk down to a much smaller size. In this form, Kirby's combat ability is reduced, losing his ability to inhale, float and slide. The benefit of this ability is to go into small cracks and tunnels, which gives access to secret treasure chests.
Trivia
In Kirby's Adventure, unused sprites for a smaller Kirby can be found suggesting that there was plans for a copy ability where Kirby shrinks. Masahiro Sakurai confirmed this in 1993 interview.
