Now 16 years old, Ben's alien-transforming secret is out and he's a world-famous celebrity. The trouble is, this fame has attracted the attention of villains jealous of Ben's powers. So it's a good job he has a new and improved Omnitrix - the Ultimatrix - that allows Ben to turn into brand new aliens. With it he can also upgrade some of his existing aliens into Ultimate forms with increased powers and strengths - such as an even bigger and stronger Ultimate Humungousaur! This annual features non-stop action with great comic strip stories, fun activities and puzzles, and profiles on every "Ben 10 Ultimate Alien" fan's favourite aliens. So come and join the action as Ben, Gwen and Kevin team up to take on the bad guys...Ultimate style!