This is the first appearance of She-Bang (a.k.a. Shenice Vale). She's a character created for the show and did not appear in the Milestone comics.
Hotstreak's lack of appreciation for the "Space Battles Episode 9" mirrors the less than positive reviews for the Star Wars prequels: Star Wars: Episode I - The Phantom Menace (1999) and Star Wars: Episode II - Attack of the Clones (2002).