|Ben 10: Alien Universe|
|Season 1, Episode 11|
|Zs'Skayr finding Hex (flashback)|
|Air date||January 1, 2010|
December 24, 2012 (BiA)
Ben 10: Invasion of the Omnitrix
X-Mas is the eleventh episode of the first season of Ben 10: Alien Universe.
After defeating his master, Hex—or as he would better prefer now, X has arrived on the scene of a Christmas-time Bellwood to ruin the spirits of the 10 Squad. Will the team be able to stop this menace from ruining the spirits for all of Bellwood? Will Kevin have any spirit?
- The true identity of "Mystery," the blue Cerebrocrustacean minion of Ghostfreak, is revealed to be Hex/"X".
- Ben Tennyson
- Gwen Tennyson
- Kevin Levin
- Ghostfreak (flashback)
- Way Big
- Alien X
- Big Chill
- Echo Echo
- Hex returns, but in the end, is trapped in a Petrosapien crystal just as he was originally found by Ghostfreak, as revealed through the flashback.
- Hex had a similar appearance to Kevin.
- Kevin has yet another change in appearance in this episode.
- X-Mas is the first instance of a holiday-themed episode in the Alien Universe chronology, the second being Dial Z for Zombified, a Halloween special, and the third being Moira's Presents (which is actually a short).
- Nonetheless, Dial Z for Zombified will be the first holiday-themed episode to air on the day of said holiday.