Variety caught up with Joss Whedon at the premiere of Marvel’s Guardians of the Galaxy Vol. 2 tonight, and he confirmed that he’s making Batgirl!

Whedon said he doesn’t have anyone in mind of the role yet — he’s busy creating his version of the character — working on the script. But it seems like Whedon isn’t interested in casting a big movie star.

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“I’m not against movie stars, they’re great. But you need somebody who’s going to be just right. In a situation like this, the name [Batgirl] carries a lot of weight, so it’s not as critical”, Whedon said. He then joked that it’s definitely going to be Vin Diesel!

Check out the full video interview above for more.