Topper

Topper is one of the Broodals that can be fought in Super Mario Odyssey.

Battle
In battle, Topper stacks two copies of his hat atop his regular one before skipping towards Mario. Mario must knock off his hats using Cappy to damage him; once knocked off, the hat will slide around spinning like a Koopa Shell, and can be hit for one heart each.

Once all the hats are removed, Topper will be stunned, and Mario must attack the top of his head. After this, Topper will hide in one of his hats, and all three will bounce waround like shells. At this point, Mario must hit the hat he is in to stop him, with the other hats again providing hearts.

From here, the attack pattern starts over, with the exception that Topper now panics and runs instead of sitting stunned when his head is exposed. After he is hit at this point, Topper is defeated and falls to the ground in a daze.