H

Harold Diamond

Acting
Freshness: Jan 20, 2026
9Total Films
7.8 Highest Rated

About 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 became the first martial artist to compete in a kick-boxing match on Miami Beach. Fighting at the Miami Beach Convention Center on South Beach (The same center where Muhammad Ali defeated Sonny Liston for the World's Heavyweight Boxing Title), Roth ran up an impressive undefeated streak all by knockouts. He was "labeled" unbeatable, as he knocked out opponents throughout Miami-Dade and Broward Counties. In 1983 he won a Muay-Thai Championship and soon after retired with an undefeated record of 17-0 with 17 knockouts. His legendary local-fame lead to a Hollywood contract, and a name change to Harold Diamond. But, to south Florida fans, he will always be "Nature Boy" Harold Roth, the greatest kick boxer in the state's history.

Career Statistics & Market Influence

Analyzing the cinematic journey of Harold Diamond reveals a career defined by diverse artistic exploration. With a total of 9 major appearances, the actor has established a significant footprint in global cinema.

Genre Dominance: Action

The majority of Harold Diamond's filmography leans towards the Action genre. Audience data suggests that viewers respond most favorably to this persona, though their versatility has allowed for successful crossovers into other categories.

The "Box Office" Signature

With a 11% Success Ratio (movies rated above 6.5), Harold Diamond remains a reliable draw for studios. Their peak performance was recorded in Trained To Kill, which continues to be the benchmark for their career rating-wise.

Best Harold Diamond Movies Ranked

Must-watch hits from Harold Diamond's career based on audience ratings.

Complete Filmography & Success Status

Tracking the career evolution and box office verdicts of Harold Diamond.

YearMovieCharacterSuccessMore
2017 King Arthur and the Knights of the Round Table Merlin Flop Similar →
1990 Gypsy Montana the Gypsy Flop Similar →
1989 Trained To Kill Loc Syn Super Hit Similar →
1988 Killing American Style John Morgan Flop Similar →
1988 Spellbinder Man Average Similar →
1988 Rambo III Stick Fighter Average Similar →
1988 Picasso Trigger Jade Flop Similar →
1987 Hard Ticket to Hawaii Jade Flop Similar →
1986 Can You Feel Me Dancing? Judo Instructor Average Similar →

Harold Diamond - Frequently Asked Questions

What is the best movie of Harold Diamond?

According to audience ratings, the best movie starring Harold Diamond is "Trained To Kill" with a rating of 7.8/10.

How many movies has Harold Diamond acted in?

Harold Diamond has been featured in at least 9 major films throughout their career.

What are some other popular movies by Harold Diamond?

Other notable films include "Rambo III", "Can You Feel Me Dancing?", and "Spellbinder".