When Two Opposite Forces Meet

When Two Opposite Forces Meet is the fourth episode of Ben 10: Alien Helpline.

Plot
Vilgax and Zs'skayr team up to defeat Ben.

Protagonist

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin
 * OV
 * Julie

Antagonists

 * Vilgax
 * Zs'skayr