Double Mario

Double Mario is a form of Mario introduced in Super Mario 3D World, obtained by consuming a Double Cherry.

In this form, Mario gains a clone of himself who stays adjacent and copies every movement. The clone can be separated by ramps, ledges, and other obstacles. It can be stacked with other forms such as Fire Mario and Cat Mario. If the character or one of the clones gets a different power-up than the one they are using at the moment, all of them are affected. If Mario gets another Double Cherry in this form, more clones can be added. If a character Ground Pounds on another player's clone, then that clone will transform into that character's clone. The clone has no physical difference from the original unless the original is wearing a crown.

This form also resembles the Super Mario 128 demo, which featured 128 Marios. However, the Double Mario power originated when a member of the development team accidentally placed two player-controlled Marios in a level. When the supervisors saw this, they liked it and decided to keep it in the game.