Brock Lesnar is back and wants to become the UFC heavyweight champion again (Video)

Look out! Brockness Monster sighting!

Brock Lesnar has been out of action since an Oct. 2010 loss to Cain Velasquez and has not been heard from since his stint coaching The Ultimate Fighter (TUF) 13.

A second flare up of diverticulitis was serious enough to force the former heavyweight king to go under the knife on May 26 to get 12 inches of his colon removed.

But now he's back, as he says, looking as lean and mean as ever, and ready to regain the UFC heavyweight title.

Can he do it? Time will tell, but in the meantime, check out the first video sighting of Lesnar since his surgery after the jump.