A huge cast has been lined up to play supporting characters in the upcoming CG-animated Ninja Turtles movie "TMNT".

In an extensive two-part article in USA Today, it has been revealed that the likes of Patrick Stewart, Sarah Michelle Gellar, Chris Evans, Zhang Ziyi and Kevin Smith are all playing roles in the picture which is due out March 30th.

Stewart is voicing the film's villain Max Winters, a tech industrialist who is amassing an army of monsters in the city, whilst Ziyi voices the villainess Karai who leads an evil army of Foot Ninjas.

Gellar is the voice of human researcher April who serves as their technician and mother figure, Evans plays the hockey-stick-swinging Casey Jones, and Smith cameos as a greasy-spoon chef.

The Turtles themselves will not have celebrity voices. New photos of the Turtles, Splinter, Karai and her Ninjas can all be found here.