Universal and Working Title Films have added Seth Rogen, Jason Bateman, Kristen Wiig, Bill Hader and Jane Lynch to the cast of "Paul."

The road trip laffer stars Simon Pegg and Nick Frost and will be directed by Greg Mottola.

Pegg and Frost, who wrote the script, will play two science-fiction fanatics on a road trip whose conspiracy dreams come true when they trek to Area 51 and encounter the title character, an escaped alien.

Rogen will provide the voice of the alien.

Working Title partners Eric Fellner and Tim Bevan will produce with Nira Park of Big Talk Prods. Shooting begins in June.

Pegg and Frost starred together previously in the Working Title-produced "Hot Fuzz" and "Shaun of the Dead."

Rogen last worked with Mottola on "Superbad." Hader also starred in that film, and just worked with Mottola and Wiig on "Adventureland."

Working Title and U most recently completed the Paul Greengrass-directed "The Green Zone," and the Richard Curtis-directed "The Boat That Rocked."