Leland Orser, Patrick St. Esprit Join NBC's Revolution

The Revolution is growing.

Leland Orser and Patrick St. Esprit will guest-star on upcoming episodes of Revolution, TVGuide.com has confirmed. The casting was first reported by Entertainment Weekly.

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Orser, whose credits include Taken and ER, will play John Sanborn, a scientist who loves to build weapons. St. Esprit (Sons of Anarchy, Chicago Code) will portray Wayne Ramsey, a leader in the rebel resistance against General Monroe (David Lyons). Both roles have the possibility to recur.

Revolution airs Mondays at 10/9c on NBC.