Where to Watch 3 Ninjas Knuckle Up

3 Ninjas Knuckle Up features a cast of characters including Grandpa, Jack, Rocky, Colt, Tum Tum, Jo, J.J., Charlie, Lee, Chief Roundcreek, Jimmy, and The Mayor.

3 Ninjas Knuckle Up is a 1995 American martial arts comedy film and a sequel to 3 Ninjas and 3 Ninjas Kick Back, directed by Shin Sang-ok under the pseudonym 'Simon Sheen'. The movie follows the three young ninjas as they defend a Native American village against a wealthy toxic waste dumper and his allies.