DC Comics have shown us the New 52 design of Cheshire.
Cheshire is one of the more dangerous assassins of the DC Universe; an expert in martial arts and poisons. It’s likely that she’ll have some connection to the Red Hood aka Jason Todd and to Roy Harper. Both Harper and Hood are part of the group called the Outlaws.
Jason Todd was the second Robin until he was slayen by the Joker. After his resurrection he turned against Batman, angry that the Dark Knight did not try and avenge his death but is now on a path towards redemption. THe name “Red Hood” was originally used by the Joker. Harper was Green Arrow’s first sidekick until the two split apart. He’s an accomplished marksman.