Alien 23

Alien 23 is the twenty-third episode of Ben 10: Aliens Unleashed.

Major Events

 * Spikesnake  makes his debut by 16 year old Ben.
 * Perk Upchuck, XLR8, and Bullfrag make their Aliens Unleashed debut.
 * Ben 23 aliens JellOgre (Goop), Fishlegs (Walkatrout), and Rollspit (Ball Weevil) make their debut.

Characters

 * Ben
 * Blukic
 * Driba
 * Rook
 * Ben Tennyson (Dimension 23) (first re-appearance)
 * Azmuth (Dimension 23) (first re-appearance)
 * Tetrax Shard (Dimension 23)  (first re-appearance)
 * Sixsix (Dimension 23) (first appearance)
 * Sevenseven (Dimension 23) (first re-appearance)

Villains

 * Liam (Dimension 23)

By Ben

 * Big Chill
 * Perk Upchuck (first re-appearance)
 * XLR8 (first re-appearance)
 * Echo Echo (first re-appearance)
 * Bullfrag (first re-appearance, cameo)

By Ben 23

 * Build-A-Guy (alternate version of Bloxx; first appearance)
 * Smarty (alternate version of Grey Matter; first appearance)
 * Darksoldier (alternate version of Night Knight; first appearance)
 * Giant-Manster (alternate version of Way Big; first appearance)
 * Feedback (alternate version of Feedback, first actual appearance)
 * Freezelizard (alternate version of Articguana; first re-appearance)
 * Alien 23 (alternate version of Alien X; first appearance)

Trivia

 * It is the Twenty-third episode of Aliens Unleashed because of Ben 23.