|Minor Character: New York|
|Occupation||Fashion boutique owner|
|Pathology||Budding Serial Killer|
|Portrayed By||Kelvin Yu|
|First Appearance||My Name is Mac Taylor|
Oka ran a fashion boutique with his girlfriend, Melinda Kitano. One night, she was killed in a hit-and-run accident by a man named MacQuinn Taylor. Oka saw the car and was able to track it down to a nearby garage, where its owner was named as simply "Mac Taylor". With just that name and the make of the car to go on, Oka set out to track down the Mac Taylor who killed Melinda and avenge her.
During this search, he killed two men, after which he looked at their car keys to find out if they drove the type of car that killed Melinda. The first victim to die by his hand was MacArthur Taylor, who was shot, presumably when he wouldn't give up his keys. The second, killed the same week, was Macabee Taylor, who was pushed over a railing during a struggle for his car keys and died. While the CSIs make the connection between the two deaths, Oka approaches Mac while he's doing laps in a swimming pool, but dismisses him as the driver when he checks his keys and sees that he doesn't drive the right kind of car.
When he was tracked down, he was seen kneeling over candles and doused in gasoline. He picks up a gun and stood up. But instead of firing, he confessed to trying to find and kill MacQuinn. Grief-stricken, he tosses his gun away and despite Stella's pleas, he intentionally falls into the candles setting himself ablaze. He was sent to the hospital and it was mentioned by Stella that his condition was critical and he had minimal chances of survival.
Oka killed his victims in various, usually unplanned ways. The first victim, MacArthur Taylor, was shot. The second, Macabee Taylor, was pushed over a railing during a struggle. However, he would always target someone called Mac Taylor who drove some kind of car (none of his targets used their full first names in records, making the one who killed Melinda difficult to track).
- Novemeber 16: MacArthur Taylor (shot)
- Novemeber 17: Macabee Taylor (pistol-whipped and pushed over a railing)
- Novemeber 18: MacKendra Taylor (assaulted, but not killed)