He has similar characteristics to that of a cartoon character. Limitless durability, increased speed, stamina, strength, and reflexes. He is able to stretch similarly to Mr. Fantastic. He is also able to cheer up children quite easily. (As seen in Avengers - The Initiative #4)

Steve wears two gloves. The left glove enables Steve to go from human-form, to Slapstick form at the press of a bottom. The right glove enables to him to store infinite amount of items.

Slapstick has access to vast sub-space storage pockets, dubbed "Infinite Pockets", which give off a pink-red hue when accessed.

In his "infinite pockets", he has random stuffed toys including one of a sponge with a face, Spider-Man, a rubber chicken, duck, and frog. He also keeps a variety of weapons in there, such as: A wooden mallet, chainsaw, flail, dynamite, a shield and a sword. He also carries around several gag items, for the pranks he pulls. Such as a arrow-through-the-head hat, a boot on a stick, Eye-pop glasses, a seltzer bottle, a party horn, and a whoopie cushion. He also carries a lot of junk, such as a trombone, bowling ball and pins, among other things.

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