Complex

Complex is the ninety-ninth episode of Ben 10: The Omniwars and the nineteenth episode in the fifth season.

Plot
The Blue Leader and Red Leader return to take revenge on Ben for destroying their precious statue.

Major Events

 * The Red Leader and Blue Leader make their The Omniwars debuts.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin

Villains

 * Blue Leader (first re-appearance)
 * Red Leader (first re-appearance)

Aliens Used

 * Way Big

Allusions

 * The title is opposite to the first episode the Red and Blue Leaders appeared in, Simple.