According to HKFA,

Jonathan Ke Quan / (關繼威) listed in HKMB is the same person as

Kwan Kai-Wai / (關繼威(2)

Johnny Koo (2) / (Johnny Koo) listed in HKMB is the same as

Johnny Koo Kwok-Wah / (古國華) who is also credited as the cinematographer in the film.

Can anyone confirm if they are the same persons?

if nobody stops me in 15 days I will merge them.

merged:

Jonathan Ke Quan ♂
關繼威
Cantonese: Gwaan Gai Wai
Mandarin: Guan1 Ji4 Wei1


Actor
1997 Fei Foo Kei Bing (1997)
Second Time Around (2002) ... Sing


and

Kwan Kai-Wai
關繼威(2)
Cantonese: Gwaan Gai Wai (2)
Mandarin: Guan1 Ji4 Wei1 (2)


Assistant Director
2046 (2004)
Assistant Action Director
The Avenging Fist (2001)

merged:

Johnny Koo Kwok-Wah ♂
Aliases: Ku Kwok-Wai, Ku Kuo-Hua





Cinematographer
The Extras (1978)
See-Bar (1980)
House of the Lute (1980)
Cream, Soda and Milk (1981)
Man on the Brink (1981)
The Club (1981)
Mahjong Heroes (1982)
Aces Go Places II (1983)
All the Wrong Spies (1983)
Perfect Wife?! (1983)
Before Dawn (1984)
Long Arm of the Law (1984)
The Protector (1985)
Twinkle Twinkle Lucky Stars (1985)
Walking Beside Me (1986)
Love Unto Waste (1986)
New Mr. Vampire (1986)
Long Arm of the Law II (1987)
Rich and Famous (1987)
Tragic Hero (1987)
As Tears Go By (1988)
Operation Pink Squad (1988)
Carry On Hotel (1988)
The Haunted Cop Shop II (1988)
Vengeance Is Mine (1988)
Operation Pink Squad II (1989)
The Iceman Cometh (1989)
Mortuary Blues (1990)
Big Brother (1990)
Stage Door Johnny (1990)
Bullet for Hire (1991)
A Fake Pretty Woman (1995)
Just Married (1995)
Legendary Couple (1995)
Gates of Hell (1995)
Love, Guns & Glass (1995)
Once Upon a Time in China and America (1997)
Don't Tell My Partner (1997)
Second Time Around (2002)
Actor
Bruce's Deadly Fingers (1976) ... Lian Chun
The Contract (1978) ... One of 3 bank robbers
The Wickedness in Poverty (1979)
Itchy Fingers (1979) ... Tung
Disco Bumpkins (1980) ... Naughty Child
From Riches to Rags (1980) ... Fatso [intro]
Food for the Sharks (1982)
Mahjong Heroes (1982) ... Jacky Chan
The Occupant (1984) ... Valentino's assistant
Happy Din Don (1986) ... Police officer
Long Arm of the Law II (1987)
Final Victory (1987) ... Watching porn videos in Japan
The Haunted Cop Shop II (1988)
The Nobles (1989) ... Ms Chong's husband
A Chinese Ghost Story II (1990) ... chef at inn
Once Upon a Time in China and America (1997)
Writer
The House Covered with Ivy (1987)


and


Johnny Koo (2) ♂

Actor
Second Time Around (2002) ... Bobby

merged:

Jonathan Ke Quan ?
???
Cantonese: Gwaan Gai Wai
Mandarin: Guan1 Ji4 Wei1


Actor
1997 Fei Foo Kei Bing (1997)
Second Time Around (2002) ... Sing


and

Kwan Kai-Wai
???(2)
Cantonese: Gwaan Gai Wai (2)
Mandarin: Guan1 Ji4 Wei1 (2)


Assistant Director
2046 (2004)
Assistant Action Director
The Avenging Fist (2001)

Wow! Quite a jump from sidekick of Indiana Jones to assitant director of Wong Kar-wai! Well, one of four, anyways. But I guess he's been floating around various gigs for awhile now.