USA Today has posted an article about Warner Bros.' upcoming computer-animated adventure, TMNT, arriving in theatres on March 30, 2007. The write-up reveals some of the actors who are doing voiceovers in the film:

First-time feature writer/director Kevin Munroe, who has worked previously in video games, comics and TV animation, says he wanted to do total animation instead of simply inserting digital characters in a real world. He said it's easier for the audience to suspend disbelief for such an offbeat story. RELATED: New Teenage Mutant Ninja Turtles Movie Is Happening at Paramount with the Jost Brothers

"This way there's no break in the reality between CG and live-action," Munroe says. "With (total) animation, there's a continuous reality that exists for the whole thing. Your mind opens up a little bit more."

Sarah Michelle Gellar (The Grudge, and TV's Buffy the Vampire Slayer) has signed on as the voice of April, the human researcher who serves as the Turtles' tech-services worker and mother figure. Fantastic Four's Chris Evans is the hockey-stick-swinging Casey Jones, and Clerks filmmaker Kevin Smith also voices a cameo as a greasy-spoon chef.

The Turtles themselves will not have celebrity voices, however.

In the film, the turtles new threat is Max Winters (X-Men's Patrick Stewart), a tech industrialist who is amassing an army of monsters in the city. Picking up where the previous live-action movies left off, Donatello, Leonardo, Michelangelo and Raphael reunite to fight him.

The article includes a movie still that states that Memoirs of a Geisha star Zhang Ziyi voices the villain Karai, who leads an evil army known as the Foot Ninjas into battle against the turtle brothers.

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