Bonneter

The Bonneters are a race of hat-like ghosts found in the region of Bonneton within the Cap Kingdom of Super Mario Odyssey. They all have Eerie-like bodies, heads shaped like hats, and big eyes with irises of various colors. As demonstrated by Cappy, they can also take on the appearances of other hats, such as the Mario Cap, and capture other beings, both animate or inanimate. Male Bonneters have top hat-shaped heads with a more pronounced eyebrow ridge while female Bonneters have bowler hat-shaped heads with ribbons and wingtip eyelashes.

One recurring post-game Bonneter will appear in certain kingdoms after breaking the Moon Rock and will require the player to approach it while capturing a certain enemy to gain a Power Moon.

Trivia

 * The Bonneters are based on the tsukumogami, a type of youkai from Japanese folklore.