Despite having blades of fury, capable of tearing your face to shreds, inserted into his hands, Wolverine is a friendly* dude. In the third trailer for X-Men: Days of Future Past, the mutant crew basically turns into Wolf's gang as the scruffy hero brings the old cast and their younger selves together. Take a journey back to the future in the past with the X-Men and their mini-me's above before the Bryan Singer-directed flick slashes into theaters May 23.
*Wolverine will punch you in your face upon meeting a younger you (as Beast learns) then say, no, dictate!, that you both will hit it off just swell. That is friendly.