Human cast of Transformers still taking form

Taylor will play code breaker Maggie Marconi, while Nolasco and Gibson will play Army officers. They join the already cast Shia LaBeouf, who plays Spike, a carryover character from the cartoon series, Megan Fox playing his love interest Mikaela, Josh Duhamel, John Voight and Bernie Mac in the Michael Bay film.

"Transformers" centers on two opposing factions of giant sentient robots -- the peaceful Autobots and wily Decepticons -- that can morph into various transportation vehicles and other odd devices.

The Transformers brand was introduced in 1984 and became a phenomenon that has included a toy line from Hasbro and Takara, a comic book series, several animated television programs and an animated feature film.

Production on "Transformers" will begin this month. A July 4, 2007 release is scheduled.