From Bloody Brotherhood (1989) :

1-

2-

3-

4-

5-

6-

Do you have some ideas ?

Number 5....



...also stars in Family Day (1990)

Thanks. If we find another cast, we could give him a ? name.

One person of our team found the number 1.

I just had a look at Bearserks new actor-images of The Case Of the Cold Fish (1995)

I couldnt be sure of this, but looks alittle bit like #5:

Same man from a different angle, he has a birthmark or something on his right cheek which should help to see if it is the same man.

He does have a spot on the exact place in his face, looks like a liver-spot or a birthmark as said. Much of everything matches so its probably him.

From another film : PTU (Johnnie To's film)

1-

2-

3-

4-

5-

6-

7-

8-

Bloody Brotherhood:
2 is Sham Chin-Bo
3 is Hung San-Nam
4 is Cheung Gwok-Wa
5 is in a lot of movies. He is (like Yat Boon Chai) a specialist to play policeman. Maybe an real ex-cop.

Thanks Mike.

PS : 7 in PTU is Yuan Bo

Same actor - in Mr. Possessed