'Gary Ng' unmasked - his real name is Chen Guilin, 28.
In an interview with RazorTV in 2009, Chen revealed why he filmed his sexual encounters and uploaded them online.
His online monkier, Gary Ng, meant "Girls Always Remember You".
Chen has pleaded guilty to eight charges - one for possessing 507 obscene films and seven others including housebreaking, forgery, criminal breach of trust and unlawfully possessing another person's identity card.
Chen had sex with various women, from students to beer aunties, and even claims to have slept with his own cousin.
He would record his sex acts with a hidden video camera and posted the clips on the Internet.
Some women were willing parties to the filming but others were filmed by him secretly.
"I came up with the idea of videotaping myself, to show off my techniques. I didn't expect to get a such a good response, so when the comments started coming in, I uploaded more," said Chen to Lianhe Wanbao in March 2009.