Billed as Michael Ryan in his earlier films, until Go aat sin (1995), released in the Philippines.
Can speak fluent Cantonese, English and Mandarin. Can also speak casual Korean, since he learned it as a requirement for his character during the filming of Chat gim (2005).
Current wife Cissy Wang was the winner of the Miss Chinese Toronto Pageant 2000. She also represented Toronto in 2001 for the Miss Chinese International Pageant.
Current wife Cissy Wang is nearly 18 years his junior.
Has a son from a previous marriage.
Was sent to Beijing, China, to train MA and focus on a calm life after running into trouble on the streets as a gang member.
Sustained a heavy injury in his right shoulder while making Ching fung dik sau (1985) which still affects him to this day.
Well trained in various martial arts styles (including wushu, tae kwon do, kick-boxing and boxing).
Was supposed to co-star with Brandon Lee in a sequel to Long zai jiang hu (1986) but Lee's departure back to the States led to the idea being scrapped.
Michelle Yeoh considers him to be the fastest on-screen fighter she's ever worked with.