Acchi is a red salamander or dragon-like creature greater in length than height. It has brown eyes, a tan underbelly, a small mouth, stubby arms, and two-toed feet. Flaps of skin resembling fangs hang on either side of its mouth. Acchi's back is constantly ablaze.
Acchi is a stationary enemy that will sit in one spot, waiting for Kirby to approach. The enemy attacks by sneezing fireballs, which move in a arc. These burn on the ground for a few seconds before going out. Acchi can spit them upwards in a parabola or straight at Kirby.
Acchi's name is a pun on the Japanese word "acchī" (あっちい), which is often said when something is very hot, and is a diminutive of the word "atsui" (熱い/暑い/あつい meaning hot). It also derives from "achoo", the sound made when one sneezes, which Acchi does when it attacks.