Super Bell

The Super Bell is an item introduced in the game for the Wii U, Super Mario 3D World. It is a golden striped bell with beady eyes. When obtained, Mario, Luigi, Princess Peach, Toad, Bowser, or Rosalina will transform into their cat form, which allows them to run up walls, slide into enemies, attack in midair, and climb up Goal Poles. There's also another power up called Lucky Cat Bell which turns also Mario again into a cat, but when they ground pound under a certain condition, bonus coins will appear. With a Lucky Bell, it can also turn into a statue but if enemies touch Mario, they'll get defeated.