The Emmy-award winning AMC series Mad Men will start production on its fourth season April 12th, and some details on new characters in the season have emerged. Ausiello Files is reporting that casting is currently under way for three new characters that will debut this coming year. Here are the details on the characters:

The rookie trio includes... a handsome and creative male; a voluptuous, curvy, and cute brunette who is friendly but professional; and an affable guy who is a bit lacking in personality.

It was said that these could possibly be recurring characters on the show, but further details weren't given. A Season 4 premiere date for Mad Men was not released at this time. The series stars Jon Hamm, Elisabeth Moss, Vincent Kartheiser, Christina Hendricks, January Jones, Aaron Staton, Michael Gladis and John Slattery.