Ursa is a Kryptonian criminal.
On Krypton, Ursa was a military commander, leader of the renowned Black Zero Unit. She was ordered to arrest Jor-El and Non as they spread news about an incoming destruction of the planet, but she ended up agreeing with them. She allied herself with her superior, General Zod, against the Kryptonian Science Council, but the rebellion was lost and she was exiled to the Phantom Zone. During her imprisonment, she had a son from Zod, and she nurtured her hatred towards the ones who betrayed her people.
Role in Injustice
While trying to get back to his home dimension, Sub-Zero inadvertently opened a portal to the Phantom Zone, freeing Superman and his allies: Zod, Ursa and Non. Wanting to help Superman regain control of his Regime, Ursa started battling Batman and his League.
Powers and abilities
As all Kryptonians under a yellow sun, Ursa possesses superhuman strength, speed, stamina, durability and intellect, enhanced senses, flight, invulnerability, freezing breath, heat and x-ray vision, and super-breath. She's also an expert martial artist and a skilled markswoman.