The Pint-Sized Slasher is a myth in Fallout 3.
The Pint-Sized Slasher was a pre-war 21st century child serial killer who wore a sinister clown mask, and a white striped shirt, with jeans, and used a large chef knife as his signature killing tool. The player is able to pose as this killer in the Tranquillity Lane quest activated by entering Vault 112, with the ability to kill all residents of the small cul-de-sac.
The myth was used to scare children who misbehaved. The Slasher is said to appear from a dog kennel at dusk to chase the children around with a toy knife. The Pint-Sized Slasher was the second-best selling pre-war Halloween costume behind Captain Cosmos.
In the loading screen for Tranquillity Lane, when the newspaper regarding America annexing Anchorage appears, on the right hand side is an article mentioning the Pint-Sized Slasher. The newspaper article can be accessed in full by going to L'Enfant Plaza and entering the Capitol Post newspaper office.
- "What American child alive hasn't heard the story of the Pint-Sized Slasher, that diminutive demon in a clown mask who stalks and slashes the innocent residents of supposedly safe suburbia? It's just one of the many folk stories parents use to scare their youngsters into behaving themselves. Or is it? According to Germantown police chief Joseph Field, the Pint-Sized Slasher may be more real than many people would like to admit. "After reviewing the autopsy results of the Linden Street slayings, we have confirmed that the force and direction of every knife wound are consistent with an attack from a much smaller assailant. A child, to be precise. Add to the sinister forensic findings this statement from Christopher Atkinson, the one surviving victim of the adolescent assassin, and it becomes clear that the Pint-Sized Slasher does indeed walk among us: "The clown! The clown! He's going to kill us all, do you understand me? He stabbed my brother Shaun right in the face! He killed my brother! The little clown! But assuming the Pint-Sized Slasher is indeed a real, tangible threat to the peace loving residents of D.C. suburbia, one question remains: why? What could possibly motivate a child to don a clown mask and murder innocent people in cold blood? We may never know. At least not until the miniature maniac is brought to justice. Until then, all we can do is lock our doors, kiss our children goodnight - and pray they live to see morning."
- ―Walter "Street Beat" Munroe
- The Pint-Sized Slasher mask is located in the Homestead Motel in Point Lookout in room 1K.