Starfire
The princess of Tamaran, Koriand’r was given to alien conquerors as a slave. Needless to say, that ended with those conquerors dead, Kori on Earth, and her being made a member of the Teen Titans. Fans know her primarily from the Teen Titans cartoon, and when DC showed her in the New 52, fans were disappointed with how she was portrayed. This game would go a long way towards rebuilding her reputation.
Going back to her once being a slave, a game set on an alien planet where she’s forced to fight to survive would be fun. She could be stranded on the planet because she tried escaping and caused the ship to crash. Tomb Raider and Far Cry would be influences here; while she wouldn’t be using wingsuits or climbing up to radio towers, she would be doing whatever she could to survive. Look at Infamous: First Light and use that as a way to explore Kori’s home life before her enslavement. Games are starting to provide character-focused stories of survival which is fitting in this case. Starfire may look happy all the time, but her backstory is anything but, and it shows that above all else, she’s a survivor.