I've seen this guy once or twice on BJW tapes and after a bit of research I found he wrestled during the 70s and 80s in the United States in the NWA as The Dragonmaster.
Kazuo Sakurada joined JWA in 1971 and later joined All Japan after JWA closed.
In 1975, All Japan sent him and Gen'ichiro Tenryu to the US, where Sakurada wrestled until late 1980s under different names including Mr. Sakurada, Rambo Sakurada, Kendo Nagasaki (after 1980 or 81), etc. He also wrestled in Canada and Puerto Rico and won several titles including Florida Hvywt & Tag, WWC Tag, PNW Tag, Southern Hvywt (Memphis), Americas Tag (Los Angeles). He left All Japan in 85 and briefly wrestled for New Japan. He wrestled as Dragon Master when Muta had his first stint in WCW in late 80s.
He joined SWS when it opened in 1990. Started NOW in 92 after SWS closed, but the promotion didn't last long.
Not to be confused Peter Thornley, a British wrestler who also wrestles as Kendo Nagasaki.
I gathered that the guy was the trainer for BJW during their early years and him not appearing on their shows since about 1996... is he still training people there or has he since retired?