Haru's mindrot (and possible mindflourish)

In Super Mario Odyssey, one of the compliments Mario receives from Cappy after performing impressive feats is "Amazing! I'd take my hat off to you, but..."

This is referencing the fact that Cappy's species, the Bonneters, have two forms: a "ghost form" in which they appear as a small ghost with nub arms (similar to a Boo) wearing a hat, and a "hat form" in which they are only the hat itself. Since their eyes are on the hat in both forms, it is logical to assume that the hat is the main/essential part of their being and the ghost body is an auxiliary construct. As such, the possibility of them being able to remove the hat seems very unlikely.

However, if we assume that such a thing is possible, i.e. that a Bonneter can remove the hat while remaining embodied in just the ghost part, then Cappy's model is not actually fully modeled enough to see what that would look like. As the top of his ghost body is always covered by the hat, it is missing from the model.

Still, Cappy's sister Tiara does have a fully modeled ghost body underneath her veil. This allows us to view at least her in this hypothetical "hat off" form, and if Cappy were to have one, it would likely look very similar to this.

i'm the cheapest thrill (and i can barely stand myself)