Barbara Gordon is set to make her cinematic debut later this year in HBO Max's Batgirl movie, but her costume in the movie suggests that Barbara's other alter ego, Oracle, won't be making an appearance in the DCEU. Of course, trying to decipher what is and isn't part of the DCEU pre-Flashpoint/reboot canon is a herculean task in itself. Even if Batgirl is part of the main canon, there's reason to believe that the story is taking place in a universe where Barbara never undergoes the circumstances that lead to the creation of her second major heroic identity. It comes down to the reveal of her Batgirl costume.
The Bat-Family is prone to costume changes, perhaps more so than any other mainline DC Comics group of characters. Batgirl, herself, has been through several different costume iterations. The final costume design for the film was revealed by Batgirl actress, Leslie Grace, back in January. Right away, it was clear that the costume was based on a specific version of her superhero garb, the second costume she wore after the reboot of the DC comic book universe under the New 52 branding for the iteration of the character that came to be called "Batgirl of Burnside."
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The choice of Batgirl's newest live-action costume would be easy to write off as being based on popularity. It was the first time in the comics that Barbara's Batgirl costume had been made a big deal of at all. However, the fact that this was the costume chosen would seem to strengthen the case for Barbara's other heroic identity, Oracle, being absent. The question is whether or not that's necessarily a bad thing.
Barbara Gordon first debuted as Batgirl in Batman #139 (1961), where she went
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