Classic Timeline

"Omniverse is always taking place "now." Ultimate Alien is always taking place just before Omniverse. Alien Force was always taking place "now," until Ultimate Alien aired, at which point it took place about a year ago."


 * -Dwayne McDuffie's concept of "now", implying the use of a floating timeline

In this timeline, all of the canon Ben 10 episodes take place.

It is the timeline where nearly the entire Ben 10 series take place. Gwen 10, Goodbye and Good Riddance, Ken 10, Ben 10: Race Against Time and all of the video games released as well as comics didn't happen in this timeline.

Prior to 231AD

 * Millions of years prior to Omniverse
 * A meteor crashes on Galvan Prime.
 * The Omnivoracious species becomes extinct.
 * Before 231AD
 * Azmuth is born.
 * Zennith is born.
 * Azmuth creates Primus and later begins creation on Ascalon.
 * Zennith leaves Azmuth, he doesn't know until he found her gone when he finishes creating Ascalon.

231AD-1900

 * 231
 * Sir George is born.
 * Prior to 1131
 * The destruction of the Incursean homeworld takes place.
 * 1131
 * Sir George acquires Ascalon from Azmuth.
 * After 1131
 * Azmuth creates the Unitrix and the Prototype Omnitrix.
 * The Forever Knights are founded by Sir George.
 * The Forever Knights kidnap a map making alien dragon.

20th Century

 * 1945
 * Summer
 * Max Tennyson is born.
 * 1952
 * Paradox's time machine fails, sending him out of time for 100,000 years.
 * 1962
 * Max meets Verdona along with the Synthroid.
 * Max is discharged from the Air Force in order to be an astronaut.
 * Magister Labrid invites Max to become a Plumber.
 * 1962-1970s
 * Max becomes a Plumber.
 * Early 1990s
 * Ken Tennyson is born.
 * Mid 1990s
 * Kevin Levin is born.
 * Ben Tennyson and Gwen Tennyson are born roughly a year later.
 * 1996 - 1999
 * Devin Levin is murdered by Ragnarok.
 * Seven years prior to the original series
 * Mrs. Levin marries Harvey Hackett.

21st Century

 * 2000s
 * Kevin destroys his house due to his insanity, then runs away thinking his punishment was being kicked out on the street.
 * Mrs. Levin divorces Harvey.
 * 6 years ago
 * Summer
 * The events of Ben 10 take place.


 * One week prior to The Big Tick
 * Arburia is destroyed by the Great One.
 * Azmuth begins working on the Omnitrix.
 * The events of Ben 10: Destroy All Aliens take place.


 * 5 years ago
 * The flashback events of Ben 10: Omniverse take place.
 * 2 to 4 years ago
 * Ben removes the Omnitrix.
 * 1 year ago
 * The events of Ben 10: Alien Force take place.
 * The events of Ben 10: Alien Swarm take place.
 * Present
 * Aggregor kidnaps Bivalvan, Andreas, P'andor, Ra'ad and Galapagus.
 * The events of Ben 10: Ultimate Alien take place.
 * Azmuth destroys the Ultimatrix.
 * The events of Ben 10: Omniverse take place.
 * Future (all possible and may change)
 * According to Derrick, the future is constantly in motion and changing.
 * 2022
 * The Plutonian Revolt take place, and Ben starts calling himself Ben 10,000 after the war.
 * 2030s
 * Ben goes back in time to meet his younger self.

Trivia

 * When it was released, Destroy All Aliens was not considered canon, but when Omniverse started, Derrick made the movie canon to the story.