The Grim Adventures of Billy and Mandy (2001)

Episode Overview

Nergal excitedly shares his new pizza venture with the gang, prompting Grim to believe he can surpass it using his grandmother's secret recipe. A fierce competition ignites between Nergal's Pizza and Grim's Pizza, with each side airing commercials and trying to undermine the other. Meanwhile, Nergal Jr. employs his shape-shifting skills to sneak into Grim’s kitchen and swaps Granny Grim's spicy sauce with a "horrific potion." This backfires when the pizzas turn into monstrous creatures and begin wreaking havoc in the city, while the townsfolk develop parasites akin to Nergal. Just as Grim's sauce detonates, Nergal and his family make their escape.