Withdraw

Withdraw is Squirtle's Side Special Move. Only seen in a screenshot, it appears that Squirtle goes inside its shell and speeds across the stage, powered by a jet of water shooting out the back of its shell. It appears technically similar to Yoshi's Egg Roll. However, if someone jumps on top of Squirtle, it gets stopped and Squirtle falls into a laggy animation.

Origins

Withdraw is a move in the Pokémon games learnable by shelled Pokémon that raises their defense by withdrawing into their shells.

External Links

Confirmation