Slapstick, whose real name is Steven Harmon, is a Marvel Comics superhero created by Len Kaminski and James Fry III. He first appeared in The Awesome Slapstick #1 in November 1992, debuting in a four-issue limited series. Originally a high school practical joker from New Jersey, Steve Harmon disguised himself as a clown to enact a prank at a carnival, only to follow kidnapped classmates through a portal into Dimension X (also referred to as Dimension Ecch). There, exposure to experimental energy transformed him into a living cartoon entity composed of electroplasm—unstable molecules granting him the physics-defying abilities of a slapstick animated character, including near-indestructibility, malleability, rapid regeneration, and the capacity to pull oversized weapons from subspace pockets in his gloves.
In his early adventures, Slapstick confronted a series of eccentric villains, such as the Punisher parody Overkiller, a child genius named Oliver Denton with a destructive robotic teddy bear, and the explosive Neutron Bum, whom he neutralized simply by providing a cup of coffee before ambushing him. These encounters highlighted his anarchic, humor-driven approach to heroism, often prioritizing cruel tricks over conventional combat. He later allied with established heroes, including Spider-Man and Ghost Rider, and joined the New Warriors after assisting in repelling a Badoon invasion, solidifying his place among younger superheroes while maintaining his irreverent personality.
Slapstick's character evolved through significant Marvel events, including registration as a recruit in the 50-State Initiative following Civil War, where he secretly assaulted instructor Gauntlet in retaliation for disparaging the New Warriors. He subsequently deserted to form Counter Force (later Avengers Resistance) with former teammates to expose Initiative corruption, participated in cleanup efforts after World War Hulk, and fought during Fear Itself. In later years, he joined Deadpool's Mercs for Money, experiencing personal struggles including depression and a desire for normalcy, before quitting the group. His most recent solo series in 2016–2017 explored his attempts at independent heroism, including collaborations with Spider-Man, while grappling with the isolation of his cartoon existence.