|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 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).