MERCER was the only Cobra Viper to defect to G. I. Joe. He originally signed up with SGT. SLAUGHTER'S MARAUDERS, an outfit so secret that the Pentagon never acknowledged their existence. Recently transferred into the main body of the G. I. Joe team, Mercer is invaluable as a tough fighter and as a source of inside information on Cobra tactics and battle doctrine.

"Although the rest of the G. I. Joes weren't too thrilled about having a defector in the ranks, especially one from Cobra, we soon developed a grudging respect for his no nonsense attitude and coolness under fire. We also didn't mind the fact that Mercer is strong enough to carry a 88mm Stanford Rocket Launcher with an ample supply of anti-tank armaments. None of this means that we like him very much, but then again, he doesn't like us very much either."

The following users have Mercer in their collection:

The following users have Mercer on their wishlist: