An innocent and chaotic catalyst whose accidental destruction of a magical scythe triggers a crossover event, leading to a supernatural fusion and temporary KND involvement.
Billy's chaotic mistake creates the circumstances that Mandy turns into a power grab.
Billy's accidental destruction of the magical scythe triggers the crossover, while Mandy exploits the resulting supernatural crisis to take over the K...
Billy's accident directly involves Grim's supernatural artifact and triggers the crossover.
Billy accidentally gets stuck with Grim's scythe in his dad's lucky pants, creating the central problem that brings the characters together.
Explore the full interactive character relationship map of The Grim Adventures of the Kids Next Door