Watch On, Watch Off

Watch On, Watch Off is the one-hundredth episode of Ben 10: Universal Road Trip. It is the 100th episode of the series.

Plot:
Ben finally tells Rook how he decided to take off the Omnitrix before the events of Alien Force.

Major Events:

 * It showed how Ben took off the Omnitrix, as it was a ??? Vilgax used to remove it.
 * It is also a prelude to the show, Ben 10: Alien Force, as Max secretly kept the Omnitrix hidden somewhere before placing it in Ben's room when he arrived after facing a DNAlien at the Rustbucket.

Characters:

 * Ben Tennyson (11 and 16 years old)
 * Rook Blonko
 * Gwen Tennyson (11 years old)
 * Max Tennyson (61 and 66 years old)
 * Carl Tennyson (Flashback)
 * Sandra Tennyson (Flashback)
 * Azmuth (Flashback)
 * Tetrax Shard (Flashback)
 * Julie Yamamoto (Flashback) - 11-year old with pigtails, white skirt, pink shirt with yellow and orange stripes, and white shoes
 * Cash (Flashback)
 * J.T. (Flashback)
 * Ken Tennyson (Flashback) - Gwen's older brother, first appears taking Ben to his soccer practice

Villains:

 * Vilgax (Flashback) - used a Sonic device to finally remove the Omnitrix from Ben, but Ben had secretly tricked Vilgax into using, causing him to launch to Planet Ariel, where he remained a prisoner for the rest of the life, while his son, Ricoronis suddenly follows in his footsteps
 * Psyphon (Flashback) - first followed Vilgax in his rule against Ben. After Vilgax's defeat, he begins to worship and follow Vilgax
 * Dr. Animo - appears at the end preparing to face Ben after he and Max told Rook everything about how he took off the Omnitrix

Aliens used by 16-year old Ben:
???

Aliens used by 11-year old Ben:
???

Quotes:
???

Trivia:

 * There were several foreshadowings in the episode to led to Ben 10: Alien Force:
 * Ben settling down now that the Omnitrix has been removed, being taken by his cousin, Ken to his first soccer practice.
 * Max secretly keeping the Omnitrix while being prepared for the Highbreed Invasion, even taking some DNA for recreation of the Plumbers
 * Gwen being wisked away, leading to the robot posing as her in the show.
 * Kevin having his memory erased from the Rooters incident, along with Alan, Manny, Helen and Pierce with different lives being Plumbers' Kids.
 * Ricoronis replacing his father by planning to conquer 10 worlds with help from Psyphon.
 * An 11-year old version of Julie makes an appearance in the Malt shop
 * Carl planning his Presidency in space.
 * This is the 100th episode of the series.