Lock, Shock, and Barrel are a trio of mischievous trick-or-treaters from Halloween Town. They are Oogie Boogie's henchmen and the secondary antagonists of The Nightmare Before Christmas.
- Lock, Shock, and Barrel will meet Thomas, Twilight Sparkle and their friends in Thomas and Twilight Sparkle's Adventures of The Nightmare Before Christmas.
- In PerkyGoth14's stories, Lock, Shock, and Barrel are orphans who have no memory of when they were born, where they came from or that they even had parents. They are adopted and reformed by The Powerpuff Girls's older sister, Sakura Utonium and HIM. They are also renamed.
- Lock's new name is known as Richie.
- Shock's new name is known as Maria.
- Barrel's new name is known as Timmy.
- They currently attend Pokey Oaks Kindergarden.