The Ultimate Enemy: Part 1 (Jess0312 version)

Vengeance of Vilgax: Part 1 (Jess0312 version) is the fifty-first episode of Ben 10: Ultimate Alien and the nineteenth episode in the third season. It is part one of the series finale of Ultimate Alien. This will be based on the real episode The Ultimate Enemy: Part 1, except it will feature Shiori and Shiki Sakurai again and this time, Izumi Kurokawa and Ryuji Maruyama.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin
 * Shiori Sakurai
 * Shiki Sakurai
 * Izumi Kurokawa
 * Ryuji Maruyama
 * Sir George
 * Forever Knights
 * Julie Yamamoto (cameo)
 * Ship (cameo)
 * Jimmy Jones (cameo)
 * Mrs. Jones (cameo)

Villains

 * Diagon (first appearance in person)
 * Vilgax
 * Flame Keepers' Circle
 * Esoterica
 * Shiki Sakurai (under Diagon's control for part of the episode)
 * Gwen Tennyson (under Diagon's control for part of the episode)
 * Psyphon

Aliens Used

 * Heatblast
 * Eatle
 * Humungousaur
 * Jury Rigg