Teen Titans-DCBU-Main Continuity Timeline

Three Years Ago (Year One)

 * Nightwing decides to form a team composed of young heroes, who aren't ready for the Justice League. The team members are: Nightwing, Miss Martian, Kid Flash, Red Arrow, Cyborg, Aqualad, Zatanna and Donna Troy.
 * Two months after the Titans are formed, Red Arrow leaves the team over an argument with Nightwing.
 * Two-Face, the man who killed Nightwing's parents, sends his mob to completley wipe out Hayley's Circus. Nightwing goes to stop this alone, and brutally damages Two-Face before Zatanna and Kid Flash arrive to stop him.
 * When the Flash disappears, Kid Flash steps down.
 * Artemis, Green Arrow's new sidekick, joins the team.
 * Zatanna and Nightwing begin a relationship

Two Years Ago (Year Two)

 * Superboy joins the team.
 * Brainiac invades Earth. Blue Beetle, Beast Boy and Supergirl join the team. In the climax of the battle, Miss Martian is killed.

One Year Ago (Year Three)

 * Nightwing leaves the team and his positon is taken by Robin.
 * Donna Troy becomes the team leader.
 * Kid Flash resumes his position on the team and begins a relationship with Artemis.
 * Starfire arrives on Earth and joins the Titans.
 * Superboy is killed when the team find a deserted Brainiac ship.
 * Cyborg, the oldest member of the team, leaves to become a member of the Justice League.
 * When Batman turns on the Justice League, Robin is forced out of the Titans.

Now (Year Four)

 * The Justice League take control of the Teen Titans and make the new line-up: Donna Troy, Superboy, Kid-Flash, Artemis, Aqualad, Beast Boy, Starfire, Raven and Blue Beetle.

Twenty Years in the Future (Year Twenty-Three)

 * Starfire, Beast Boy, Blue Beetle, Kid-Flash (Now the Flash) and Donna Troy re-found the Justice League, and the Teen Titans disband.