Justice League/Teen Titans: Secret Legends Issue 14

"Reign of Terra" is the final issue and chapter of Justice League/Teen Titans: Secret Legends.

Featured Characters

 * Terra / Tara Markov (flashback and main story)

Supporting Characters

 * Justice League (flashback and main story)
 * Aquaman / Arthur Curry
 * Atom / Ray Palmer (cameo)
 * Batman / Bruce Wayne
 * Geo-Force / Brion Markov
 * Green Lantern / Hal Jordan
 * Martian Manhunter / J'onn J'onzz
 * Stargirl / Courtney Whitmore (cameo)
 * Supergirl / Kara Zor-El
 * Superman / Clark Kent / Kal-El
 * Wonder Woman / Diana of Themyscira
 * White Lantern / Kyle Rayner (cameo)
 * Knights of Rao (flashback and main story)
 * Alpha Wolf / Milo Chaves
 * Blue Lantern / Collin Hill
 * New Gaia / Delilah Raymond Snow
 * Omega Knight / Jason Burke
 * Toymaster / Hiro Okamura
 * Teen Titans (flashback and main story)
 * Beast Boy / Garfield Logan
 * Cyborg / Victor Stone
 * Nightwing / Dick Grayson
 * Raven
 * Starfire / Koriand'r
 * Lois Lane

Villains

 * Terra / Tara Markov (New Earth) (single appearance)
 * Lex Luthor (flashback only)
 * Slade (flashback only)
 * Vandal Savage (flashback and main story) (radio voice only)

Other Characters

 * Power Girl / Karen Starr / Kara Zor-L (flashback only)
 * Terra / Atlee (Earth Two) (first appearance)
 * Terra / Tara Markov (Team Titans) (first appearance)
 * Terra II / Doppelganger (New Earth) (first appearance)

Premise
Following the final destruction of Kobra, Terra overjoyed with the news that hers and her friends' goal of wiping out all Tyranny in the world was about to come to an end. Still, our heroine's latest mission to go undercover granted her one final test: to face and overcome her own dark side. This trial led her to an epic battle with her counterpart from another world... another timeline…

Plot
Terra is sitting in the top of a tower in the Knights of Rao's headquarters watching her teammates making their complements with the Teen Titans while calmly expressing satisfaction with the news that hers and her friends' goal of wiping out all Tyranny in the world is about to come to an end; with Lex Luthor fully pointed out a fugitive to the law and Vandal Savage still exposing himself to his future defeat and destruction, Terra and her teammates are growing one step closer to finally bring about justice to their world.

Despite all this, Tara is still troubled with the latest mission she and the Titans had with the Justice League, on which she had to disguise herself as Slade's apprentice and fake the deaths of the heroes by her own hands, as she still expresses concern and fear of becoming one of the villains who had been obsessed with the Leaguers' destruction. Hearing her thoughts, Martian Manhunter consolidates her by reminding her of the lessons Superman taught her about. Just then, they are alerted by Lois Lane about a inter-dimensional portal opening in the island where the League and the Task Force X Squad fought Brother Blood's forces.

Arriving there, they spot a pack of mercenaries who were hired by Savage to investigate. Just then, the portal erupts and a alternate version of Terra emerges from it. J'onn is quick to learn of the alternate Terra's villainy by reading her mind and overseeing her past as a psychopath and double-agent who once attempted to double-cross the Titans in her world in that dimension's Slade. Accepting that this could be her final test: which is to overcome her own dark side, Terra claims that this is her fight and volunteers to duel with her counterpart herself.

The displaced Terra is challenged by Savage's mercenaries, but she singlehandedly obliterates them with her powers. Just then, Terra faces her counterpart, who attempts to convince her that they can do much more with her powers "than using them for superhero activities". Terra properly rejects her other self's offer, declaring that she will never give up being the heroine she dreamed to be. Just by hearing Tara taunting her about jealously of having never met anyone who truly loved her, the enraged alternate Terra attacks her and two Terras engage into a terrible fight.

Seeing vibrations caused by Terra's battle, Superman, Wonder Woman, Geo-Force and Supergirl go find her. After a high struggle, Terra, overcoming her doubts and fears acknowledging her other self's weaknesses, finally defeats her counterpart before draining her off her energies with the tricks she learned with her brother. Right when the Justice League, the Titans and the Knights to see what was going on, Terra is met with three more (but also heroic) alternate versions of herself: one is the villainous Terra's doppelganger, the other is a founding member of the Titans (called Team Titans in her world) and the other is a alien named Atlee. The three Terras had been travelling across dimensions to seek and retrieve the retrieve their rogue counterpart.

The heroes are also met with Power Girl (Supergirl's counterpart from Atlee's dimension), who had been following her Earth's Terra (who happens to be her sidekick) and makes good complements with Supergirl, who met her before in one of her solo adventures. As the alternate Terras and Power Girl leave to their dimensions with the captive rogue, Terra is congratulated for her success by the other heroes as she is happy to know she has passed her final test.