Fox's new Extended Sneak Peak at "Fantastic Four" gives viewers a very in-depth look at the upcoming film--establishing Reed Richards' intellect and quest for scientific advancement at a young age, showcasing the four gaining their powers and subsequent imprisonment, and teasing the coming Doom. But it also features something completely unexpected: a message from the Merc with the Mouth himself--Deadpool.

Directed by Josh Trank and starring Miles Teller (Reed Richards/Mister Fantastic), Kate Mara (Susan Storm/Invisible Woman), Michael B. Jordan (Johnny Storm/Human Torch) and Jamie Bell (Ben Grimm/The Thing), "Fantastic Four" is scheduled for release on August 7.