Martin "Marty" A. Deeks is a Detective with the Los Angeles Police Department and who serves as a liaison to NCIS via the LAPD which means that Deeks is responsible for facilitating communications between both agencies, and coordinating joint operations involving LAPD components.
The son of a man named Gordon John Brandel and Roberta Deeks, Deeks was born on January 8th, 1979 in California but Deeks didn't have a happy childhood as his father was an alcoholic who frequently abused Deeks and Deeks's mother, Roberta.
One day, Brandel became so drunk that he started wielding a shotgun at Deeks and his mother.
In response, young Deeks shot Brandel non-fatally with Brandal later ending up in prison.
Deeks later presumably moved away and attended college and law school. He became a public defense lawyer before choosing to join the Los Angeles Police Department.
NCIS: Los Angeles Season 1Edit
Deeks made his debut appearance in the NCIS: Los Angeles Season 1 episode Hand-to-Hand (episode) where he posed as "Jason Wyler" to infiltrate the Blood and Guts Warriors Gym, a Mixed Martial Arts Fighting Gym that the Los Angeles Police Department believed was a place that the Juraez Cartel used to smuggle drugs.
NCIS: Los Angeles Season 2Edit
NCIS: Los Angeles Season 3Edit
NCIS: Los Angeles Season 4Edit
NCIS: Los Angeles Season 5Edit
NCIS: Los Angeles Season 6Edit
NCIS: Los Angeles Season 7Edit
Deeks is a tall man in his early thirties with short blonde rugged hair and blue eyes.
He is often seen wearing jumpers, jeans and shoes.
When participating in a raid in the field, Deeks dons the official NCIS bulletproof vest and like Callen and Sam, also has a holster around his right thigh.
He also originally carried a Glock 17 before switching to a Beretta 92FS but in Season 3, exchanged his Beretta 92FS for a Smith & Wesson 5944 which he has continued to use to this day.