For the first time since joining the cast, Johnny Knoxville has finally had his voice featured as Leonardo in the upcoming blockbuster re-boot, Teenage Mutant Ninja Turtles.

The Jackass star joined the cast earlier this year with Tony Shalhoub added as the voice of Splinter. Pete Ploszek played the role of Leonardo during the filming part, while Danny Woodburn played Splinter.

The new trailer features much of the same content seen before with the added voiceover by Knoxville as Leonardo at the beginning. It also features more of a look at the origin of the turtles with shots of Leonardo and the others training. The trailer also offers one of the better looks at this film's version of Shredder, clad in metal, and in a turtle hunting mood.

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Knoxville is best known for his work as king prankster on Jackass, most recently with last year's Jackass: Bad Grandpa, but he has also done voice work previously on television shows including The Goode Family and King of the Hill. Shalhoub was last seen in Bay's Pain & Gain and is best known for his work on the television series, Monk.

Teenage Mutant Ninja Turtles comes from a script by Josh Appelbaum, Andre Nemec and Evan Daugherty with Jonathan Liebesman directing. Transformers director Michael Bay is producing. The movie stars Megan Fox, Will Arnett, William Fichtner, and Whoopi Goldberg with Alan Ritchson, Noel Fisher, Jeremy Howard, and Ploszek playing the turtles.

The Paramount film is set to hit theaters on August 8.

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Johnny Knoxville, Teenage Mutant Ninja Turtles Movie, Movies, Michael Bay