A new X-Men: First Class clip shows baby Charles Xavier's friendship with an ultra-creepy young Mystique, who pretends to be Charles' mum. Plus 20 minutes of behind-the-scenes footage that's so full of spoilers, it practically gives away the whole movie.

Update: Now with HD versions of the behind-the-scenes footage.

B-Roll Part 2

B-Roll Part 3

B-Roll Part 4

And finally here is the brand new clip! X-Men: First Class hits theaters on June 3rd.