This article is about the power-up. You may be looking for Double Mario or Cherry.
Double Cherries are collectible items and a power up in the Mario series.
In Super Mario 3D World[]
The Double Cherries are power ups in this game, which gives the player another copy of the character they are using. The player will keep making copies of that character until they touch the flagpole, or get damaged and lose one copy. When the player has copies, they control them all at once, so some strategy is needed if the players want to keep them alive.
The first level the Double Cherries appear in Super Mario 3D World, is Double Cherry Pass. Bowser, or rather Meowser, also uses a Double Cherry during the second half of the fight against him.
In Captain Toad: Treasure Tracker[]
The Double Cherries are only found in 2 levels, but act the exact same. Much like most of the other stuff, the Double Cherry is required for puzzles.