Will play underworld figures in young-adult flick

Add two more gods to the "Percy Jackson" pantheon.

Comic actor Steve Coogan ( "Hamlet 2") and Rosario Dawson ("Seven Pounds") will play Hades and Persephone, respectively, in the adaptation of the young adult book series.

Hades is the god of the underworld, and Persephone is a human Hades tricked into servitude.

Pierce Brosnan and Uma Thurman were cast as a centaur and Medusa, respectively, in late March. Catherine Keener signed on as Percy's mom in mid-April.

The movie tells the story of half-human, half-god teen Jackson as he strives to find Zeus' stolen thunderbolt.

A tentative release date has been set for Feb. 12, 2010.