Okay...I was going back through one of my old submissions for modifications in this title, and this is what I found on the database entry page...
"Parkman Wong Pak Man -
[uncreditted]Buffalo Hung"
Now, I've been tracking back through the DVD (which bases its English subtitle stream on the film's theatrical subtitles) and, though I do not have the time to meticulously pore over every frame in the search for the one or two instances where Wong's character is referred to as "Buffalo" by Danny Lee's character...I did find the following:
So, though clearly not referred to as "Buffalo" in the grabs I've provided, Parkman Wong's character IS referred to by both the names "Bully Hung" and "Hung" in the English subtitles in these instances from the early passages of the film. Therefore, his character role is clearly NOT an "uncreditted" one! Of course, I could be getting my wires crossed here...
Additionally, per DOCTOR LAM, provided below are the names of all of Lam's victims, in sequence which matches against the sequence in which they are shown in the film. If someone with far more time on their hands than me wants to match Cat III actresses against the character names, then "Chan Kit Fong" is the second shown victim whom Lam dissects with a scalpel then carves up with a jigsaw.
Cheers