3 Ninjas: Knuckle Up

This film was shot before 3 Ninjas Kick Back (1994), despite not being released until later.

When Rocky, Colt and Tum Tum are spying on the meeting between Jack and the mayor, the two men agree that the hearing will be held on the following day. That night, the three boys and Jo rescue Jo's father. The next morning, the boys are exhausted and Tum Tum falls asleep leaning against the refrigerator. That night, they attend the Native American ceremony and Grandpa helps them fight off J.J. and his men. The next morning is the hearing. This means that the hearing actually started two days after the meeting.

At the End of the Movie, In the Credits, Max Elliott Slade's middle name is spelled wrong (Elliot) instead of Elliott with two t's

For the 1995 UK video version, 2 minutes and 9 seconds of footage was cut to secure a 'PG' rating.

Featured in Cinematic Excrement: 3 Ninjas: High Noon at Mega Mountain (2012)