NetherRealm Studios has given us our first in-game look at Injusice: Gods Among Us' next DLC character, Batgirl. As we had suspected, this Batgirl is Barbara Gordon, rather than Cassandra Cain or Stephanie Brown, the other two primary Batgirls of traditional DC continuity.
Thankfully, Batgirl doesn't appear to be a straight-up Batman or Nightwing clone, though there are some unavoidable similarities due to the nature of the characters' shared training. Regardless, Batgirl's grapple teleport and stun abilities should prove interesting against heavily ranged characters like Deathstroke.
The Joker's tropical vacation garb is a reference to an outfit worn by the character in 1988's Batman: The Killing Joke, which is covered briefly in this trailer. We assume Killing Joke Joker will be part of a costume pack released alongside Batgirl, as was the case with Lobo.