Ace Phanta is a larger relative of Phanta. It is a big periwinkle ghost with wing-like arms. It wears a blue witch's hat and has a raspberry-colored skull mask for a face. Its entire face hinges upward to reveal a gaping mouth. Ace Phanta has yellow eyes.
Ace Phanta appears exclusively in Stage 3 of Wild World and Stage 3 of Royal Road, where it controls certain inanimate suits of armor. When Kirby approaches one of these specific armor suits, red eyes appear in its helmet. It immediately strikes the floor with its weapon, lodging the weapon temporarily in the ground. The Ace Phanta appears over the armor's right shoulder and guffaws loudly before vanishing. The armor then dislodges its weapon.
Before reaching the Ace Phantas, Kirby finds a Miracle Fruit and obtains the Hypernova ability. When the armor's weapon is stuck in the floor and the ghost has appeared to laugh, the pink puff must inhale. He sucks up each individual piece of the armor suit and drags the Ace Phanta into his mouth, defeating it.