Super Bell

The Super Bell is a power-up introduced in Super Mario 3D World. It gives Mario, Luigi, Princess Peach, Toad, and Rosalina the Cat Suit, which gives them the ability to climb up walls, sneak, do a scratch attack and a pounce, and run up the end-of-level Goal Pole to reach the top. The character's voices sound like cats when using this power-up. There is another version of this power-up called the Lucky Bell, which turns the characters into their Lucky Cat form, which has all the abilities of the regular Cat Suit, but also gives them the ability to turn into a statue when doing a Ground Pound, which will also earn them coins as the statue falls.

In Mario Kart 8, the Super Bell is referenced in the form of a DLC cup called the Bell Cup, and a track in said cup called Super Bell Subway.

Appearances
The Super Bell first appears in the very first level of the game, Super Bell Hill. In The Great Tower of Bowser Land, the final main level of the game, Bowser will use this power-up during the final battle to transform into Meowser.