F.U. Origin: Thunder Plunger Suit – Leonard’s First Crime Fighting Suit.
Using objects he can muster from the P.S. 133’s gym locker room: Boxing gloves, compressed air canisters used for baseball machine, baseball, pipe tubes and so on, combined with plungers found from the janitor’s closet, Leonard managed to create his very first crime fighting weapon as he goes up against a gang of school bullies. out numbered 5 to 1, Leonard managed to take out most of the gang using a few cans of high pressure airs and boxing gloves. We can see the foundation of several devices used later on as Leonard and Freddy goes into crime fighting business full time!