Bill Duff (born February 24, 1974) is a former National Football League, NFL Europe, and Arena Football League defensive tackle, and host of Human Weapon on the History Channel. He holds a brown belt in Tang Soo Do, a Korean martial art he refers to as "Korean Street Fighting". Duff attended grew up in Delran Township, New Jersey and attended Delran High School, where he was also an All-American wrestler.[citation needed]