Roger Ma specializes in hand-to-hand combat against the undead. He is the author of The Zombie Combat Manual- A Guide to Fighting the Living Dead, The Vampire Combat Manual- A Guide to Fighting the Bloodthirsty Undead and The Zombie Combat Field Guide. He is the founder of the Zombie Combat Club and the Vampire Combat Club, organizations that focus on battling the undead without the aid of a firearm. He was recently featured as a zombie expert on the History Channel documentary "Zombies- A Living History." He currently trains in Brazilian Jiu-Jitsu.