James Otis "Big Cat" Williams (born March 29, 1968) is a former American football player. He played for the Chicago Bears throughout his 12-year NFL career. Williams was 6'7" and 330-pounds. Williams was signed as a free agent by Bill Tobin after the 1991 draft. He played defensive tackle on a 0-11 team at Cheyney State. Williams worked his way into the defensive line rotation his rookie season, substituting for Steve McMichael and William Perry when needed. As a rookie, he blocked a field goal at Buffalo, picked up his first sack at Green Bay, and helped with the "push" on William Perry's game-saving field goal block against the New York Giants.