Looks pretty dope. All I'd say is some of the line work could be cleaned up a little, and the character rotations could use a little more attention too, the spin at around 7 seconds is a bit choppy, a couple extra keyframes there with the features moved a little bit should smooth that out. Even if you didn't do either of those though I'd say this is pretty good. Definitely good enough to use as an intro. Nice work!