No photo available. Represent Harold Diamond? Add or change photos at IMDbPro
Up 25,521 this week

Harold Diamond

Best known to movie fans as John Rambo's "stick-fighting" opponent in Rambo III, Harold Diamond in reality is one of Florida's most-famous pioneers in the sport of American Kickboxing. Born Harold Roth, he earned the nickname, "Nature Boy", for his long pony-tail, and a habit of wearing blue-jeans into the kick-boxing ring. In the mid-1970s, he ... See full bio »

Fall TV Guide

Find out everything you need to stay up to date with the upcoming season in our Fall TV Guide!

Visit the Fall TV Guide

Facebook Live Chat With 'American Honey' Star Sasha Lane

Join us for a Facebook Live chat with American Honey star Sasha Lane on Monday, Sept. 26, beginning at 1:20 p.m. ET/10:20 p.m. PT. Make sure to follow IMDb on Facebook. Send your questions now to #IMDbAskSasha.

Follow IMDb on Facebook

On Amazon Video

Watch on TV

Do you have a demo reel?

Add it to your IMDbPage

Connect with IMDb

How Much Have You Seen?

How much of Harold Diamond's work have you seen?

User Polls

Known For

Rambo III
Rambo III Stick Fighter
Picasso Trigger
Killing American Style


Hide Hide Show Show Actor (9 credits)
 2015 Thunderland (TV Movie)
 1991 Gypsy (Video)
 1990 Killing American Style
John Morgan
 1989 Trained to Kill
Loc Syn
 1988 Spellbinder
 1986 Can You Feel Me Dancing? (TV Movie)
Judo Instructor
Hide Hide Show Show Miscellaneous Crew (2 credits)
 1988 Rambo III (stick fight coordinator)
 1988 Picasso Trigger (martial arts choreographer)
Hide Hide Show Show Stunts (1 credit)
 2016 Kickboxer: Vengeance (fight consultant)

Related Videos


Personal Details


6' 1½" (1.87 m)

Did You Know?


Harold Roth aka Harold Diamond has been reported as having a 17-0, 17 knockout kick-boxing record and a 67-0 full-contact karate record. See more »


Nature Boy

Message Boards

Discuss Harold Diamond on the IMDb message boards »

Contribute to This Page