The Filth

The Filth is the first episode of the first season of Ben 10 and the 1st episode overall.

Plot
Ben is tasked with cleaning the Rust Bucket, but when he is tricked into letting the villainous and vile Fly Guys Maurice and Sydney steal it, he must chase them down before they create an unstoppable maggot monster.

Major Events

 * Grey Matter make his debut.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Max Tennyson

Villains

 * Maurice (first appearance)
 * Sydney (first appearance)
 * Magg-O-Net Monster (first appearance)

Aliens Used

 * Grey Matter (first appearance)
 * XLR8
 * Four Arms (x2)
 * Cannonbolt

Trivia

 * This was aired as the first episode in Australia and Asia.