Gaia

Tara's history presumably follows that of her mainline counterpart: she was born the illegitimate daughter of the King of Viktor Markov and his unnamed American mistress but unlike her main counterpart who died trying to kill the Titans after joining them while working as a spy for Deathstroke, the Dark Multiverse Tara regularly participated in missions with the Titans. Also like her main counterpart, Terra had psychological issues including malignant narcissism, believing that they should rule Earth with their powers and be feared rather than help those who needed it.

On the night Dick Grayson gave up being Robin, he spoke to Tara who immediately took his words to heart. She began by rebelling against Deathstroke, eventually killing him before forcing Wintergreen to inject her with the same serum that gave Slade his powers but unlike Slade, Tara easily survived and had her powers greatly strengthened. Now calling herself "Gaia" and viewing herself as a goddess, she changed her costume and attacked the Teen Titans Tower, killing Raven, Starfire, Wonder Girl and Cyborg before leaving while also destroying the building in the process. She then found herself battling against Robin and Kid Flash who attempted to stop her, only for their efforts to be in vain as she was able to overpower them and kill them by impaling them through their chests. Seconds later, Gaia fought Superman and managed to kill him by using kryptonite. With Superman dead, Gaia destabilized Earth's core and successfully destroyed most of the world. She then killed Changeling and with no-one left to stop her, ruled over the broken Earth, forcing those who had survived to live in constant fear of attracting the attention of a God who now treated the Earth as her personal playground.