Super Luigi!

Also, if you were looking for Super Luigi, Luigi's form when he gets a Super Mushroom, see here.

Super Luigi! is Luigi's Super Ability in Mario Strikers Charged Football. It is activated when Luigi gets his Special Item, which is symbolized as Luigi's Head. Once executed, Luigi will become giant, and will be able to squash other players for a few seconds. He is capable of squashing both the opposing team players, and his own team players. The move will wear off after about 10 Seconds, or if he starts a Mega Strike. Although Luigi is able to squish all of the players, it cannot go through Goalies, and the move can be countered if a player slides into Luigi.

Mario's Super Ability, Super Mario!, works the exact same way.

Trivia

 * This ability works similarly to the Mega Mushroom.