Classic 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 and all of the video games released as well as comics didn't happen in this timeline.

Years are explained via Dwayne McDuffie's concept of "now".

Unknown
Azmuth builds the Omnitrix, Ultimatrix, and Unnamed Third Omnitrix.

Summer 1946

 * Max Tennyson is born

1950s
Paradox's Machine fails sending him out of time for 100,000 years

1963

 * 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.

1960's-1970s

 * Max becomes a Plumber.
 * Carl and Frank are born.
 * Sandra and Natalie are born.

Early 1990s

 * Ken Tennyson is born.

December 1994

 * Kevin Levin is born

December 1995

 * Ben and Gwen Tennyson are born.

1995-2004
Devin Levin is murdered by Ragnarok.

June 2005 - August 2006
The events of Ben 10 take place.

Q4 2006

 * Ben removes the Omnitrix

Spring 2011 - December 2011

 * Ben puts the Omnitrix back on.
 * The events of Ben 10: Alien Force take place.
 * Aggregor kidnaps five Andromeda Aliens.

Janurary 2012- Q4 2012

 * The events of Ben 10: Ultimate Alien take place.

2022 (Possible)

 * The Plutonian Wars take place, and Ben may start calling himself Ben 10,000.

2032 (Possible)

 * Ben goes back in time to meet his younger self.

Appearences

 * Ben 10 (almost every episode)
 * Ben 10: Alien Force
 * Ben 10: Ultimate Alien
 * Ben 10: Omniverse