Silk Spectre II
Who is she? Laurie Juspeczyk, daughter of the original Silk Spectre, Sally Jupiter. Trained by her mother to continue into the superhero business, Laurie was kept on the retainer by the US government because she was dating Dr. Manhattan, but later ends up falling in love with and dating the second Nite Owl, Dan Dreiberg. She later learns that the Comedian is her father, and at the end of the comic, indicates that she wants to take on his mantle.
Why include her? Whether she comes back as her original hero persona or the Comedian II, it would be awesome to play as her in Injustice 2. That universe is in no shortage of great hand to hand fighters, which makes her a great addition to the roster. Can you imagine her going up against someone like Black Canary or Wonder Woman? Yeah, it’d be pretty cool.