|This article's title is derived from Japanese|
|... because it was never localized to English in official sources.|
Anger Masker has a round orange body, hands, and feet. It wears a handmade headband and skirt made of wood and string. Behind the mask is a face with eyes like Kirby's, a wide tan nose, and yellow face paint. The mask it wears is colored orange, red, white, and leather. The mouth is in a zigzag pattern, the "face paint" is red, and the mask has one "eye."
Anger Maskers make their first appearance in the first stage of World 2, Friendly Field. Anger Masker stands on a pile of leaves or walks in a small area. When wearing its mask, it throws handmade hammers at the player. When its mask gets cut or separated into parts, it reacts in a cowardly way, running away from the player and crying.
Anger Masker appears in the game's boss rush mode, The Ultimate Choice, as a part of Mid-Boss All Stars #2. Two of them appear in three levels of difficulty (Mild Stroll, Zesty Expedition and Spicy Adventure).