Marty Deeks is a central character on NCIS: Los Angeles.

A Los Angeles PD detective, he was first introduced in the first season during an undercover operation in which he squared off with Sam in a boxing match.

He then became an LAPD liaison to NCIS in the second season, partnering with Kensi Blye and becoming a de facto part of the team ever since.

Marty Deeks Quotes

Don't you have a jacket or something? I don't need the whole neighborhood checking out my wife.

Deeks

Danny: Can I help you with something?
Deeks: Just thinking about your hair. Is it bulletproof?

NCIS: Los Angeles Quotes

Kensi: Nate, you can't take this away from me. You can't!
Nate: I just want what's best for you and the team. And unfortunately, it may not be the same thing.
Kensi: Listen to me: I belong here.
Nate: Not yet.

She wasn't born a killer. We made her one.

Callen