While the exact plot details of X-Men: Days Of Future Past are still under wraps, initial casting makes it seem as though Bryan Singer is trying to pull off an all-mutant equivalent of Valentine's Day. The cast is set to include the bulk of the original trilogy as well as most of the X-Men: First Class players. However, there are two key characters that Singer is still on the fence about bringing back. Note: nobody counts Kelsey Grammer.

When MTV approached Singer about Halle Berry returning to the role of Storm, he wasn't certain if the story would allow for it. “I can’t say. I don’t know yet. And it’s not necessarily a deal making aspect at all. I want to make sure it’ll make sense. But I love working with her.”

He pretty much told the Huffington Post the same thing when they asked about Alan Cumming appearing once again as Nightcrawler. "I don't want to...sometimes you don't want to say "yes" or "no" to something that may not be a "yes" or a "no," or anything. I haven't decided yet, a few things. I'm still, you know -- there are certain aspects of the script that I'm still toying with."

In other words, Singer isn't sure that he wants to have a bad guy defeated by being teleported into the sky and then zapped with lightning.