Snowman Wario

From the Super Mario Wiki

Snowman Wario is one of Wario's many transformations in the Wario Land series of games. It is triggered by having a snowdrift fall on Wario's head. He is then covered in snow, disabling his running and jumping capabilities, but allowing him to defeat baddies on touch. Also, if going down a slope, he can break certain blocks and destroy even more enemies, although he must be given some momentum first. If he hits a wall, he will become normal Wario. Ball o' String Wario combines this ability with Flaming Wario.

Ice Creatures
Abominable Snowkoopa | Baron Brrr | Bleak | Blizzaurus | Bonechill | Brrr Bit | Chief Chilly | Chill Bully | Crystal Bit | Crystal King | Dr. Freezegood | Flaky | Flurry | Freezie | Headless Snowman | Ice Elemental Ghost | Ice Puff | Ice Spiny | Jojora | Jojora's Friends | Mr. Blizzard | Snowman
Ice-Related Creatures
Beldam | Bumpty | Frost Piranha | Herringway | Ice Luigi | Ice Mario | Mayor Penguin | Pengoon | Penguin | Penguin (WL) | Coach | Penguin Patrol | Pennington | Snowman Wario | Topi