Museum Mayhem is a Ben 10: Ultimate Alien comic book published by Bandai, DC and Cartoon Network as a free gift with the purchase of an action figure in the so-called "Comic Packs".
Plot[]
The story begins with Ben at the museum, where an attendant shows the audience a piece of Taydenite. Immediately, Vulkanus appears destroying a wall to steal the precious piece, so Ben transforms into NRG. During the fight, Vulkanus takes the piece of Taydenite and uses it as a dagger, breaking NRG's containment suit, forcing Ben to transform into Spidermonkey.
During this new confrontation, Vulkanus throws a museum piece at Spidermonkey, but Spidermonkey manages to dodge it and also recovers the Taydenite. However, in a moment of carelessness, Vulkanus manages to deliver a strong blow to Spidermonkey, throwing him against the wall. Ben decides to become the Ultimate Spidermonkey and manages to capture Vulkanus, forcing him to abandon his robotic body, although he is again captured by Ultimate Spidermonkey's web. The comic ends with Ben returning the piece of tadenite and mocking Vulkanus.