Bryan Singer answered fans’ questions about X-Men: Days of Future Past on Twitter today and we’ve posted his X-Men-related responses below. Stay tuned for the first trailer coming online tomorrow morning at 6 a.m. Pacific Time!

Coming to theaters on May 23, 2014, X-Men: Days of Future Past stars Hugh Jackman, Ian McKellen, Patrick Stewart, James McAvoy, Jennifer Lawrence, Michael Fassbender, Nicholas Hoult, Anna Paquin, Ellen Page, Shawn Ashmore, Peter Dinklage, Omar Sy, Halle Berry, Daniel Cudmore, Fan Bingbing, Boo Boo Stewart, Adan Canto, Evan Peters, Josh Helman and Lucas Till.

“Can you give us another hint at what we might see in the full trailer tomorrow?” –from Neil Sutton on Facebook

Bryan Singer: Tomorrow’s trailer is primarily a character piece, as most of our VFX are not yet finished.

FB fan Vlad Micu asks: “How was it to bring the cast of the original X-Men and the cast of X-Men First Class together in the same Movie?”

Singer: Awesome, and slightly intimidating.

#AskSinger #XMen was it challenging working with such a big varying cast?

Singer: [email protected]_ I was real comfortable with the original cast and knew the #FirstClass cast as a writer/producer but not yet as a director. With the exception of @NicholasHoult of course — but they were all fantastic and made the experience fun.

“What was the funniest moment on set with the entire cast?” –from Daniel Long on Facebook

Singer: In between shooting a serious scene on Xavier’s private jet, Michael, Nick, Hugh and James dancing to #BlurredLines #IHaveTheFootage

How does this movie make itself new and fresh, while still keeping the traditional feeling we all loved from the previous movies?#AskSinger

Singer: [email protected] It’s all in the cast. They are great actors who know their characters – who know how to bring them to life.

“Have you ever attempted Hugh Jackman’s legendary workout regimen?” –from Jacob Parker on Facebook

Singer: Someone tweeted that I was gaining weight, so I tried the workout… for a day.

Mystique has been a fun character to see in the movies. What can we expect to see from her in DOFP #ASKSINGER #XMEN

Singer: [email protected] She’s a much more hardened kick-ass character than she was in #FirstClass.

“What scene are you editing right now?” –From Kevin Lieu on Facebook

Singer: I’m tinkering with a piece in the opening that helps set up the story – but I’m in a good place with the cut. A bit ahead of schedule

“Mr. Singer, how would you characterize the tone and style of ‘Days of Future Past’?” –from Ben Ferguson on FB

Singer: Although there is a great deal of humor, the overall tone is a bit darker than previous films, particularly because of the stakes.

How many new x men characters are in the new film #XMen #AskSinger!

Singer: [email protected]_Payton82 A lot — Blink, Bishop, Sunspot, Warpath, Ink, Quicksilver, etc.

“Are there any practical jokers among the stars of Days Of Future Past? #XMen #AskSinger” –from Charlene John Crisp on Facebook

Singer: Yes. Two words. James. McAvoy. #IHaveTheFootageOnMyiPhone

#x-men #AskSinger What is it, do you think, that keeps drawing you back to the X-Men? Also… Welcome back!

Singer: [email protected] I love the the characters. There’s always a new place to go in the #XMen universe. #TimeTravel #Sentinels

Is their any X-Men character that you haven’t used that you would like to? #AskSinger #XMen

Singer: [email protected] Yeah, Gambit, Deadpool, and a few others I’d rather not mention.

#xmen #AskSinger Stylistically, First Class echoed the Bond movies of the 60’s. Should we expect DoFP to echo 70’s cinema in some fashion?

Singer: [email protected] Yes, in the colors, some of the style & music. I also used 16 & 8mm footage which I operated myself for some scenes which was fun.

“Will we finally get to see the sentinels in action?” –from Brandon Williams on Facebook

Singer: Yes. 🙂