William Benjamin Bensussen (born November 7, 1982), better known by his stage name The Gaslamp Killer, is an American alternative hip hop producer and DJ based in Los Angeles, California.

William Benjamin Bensussen was born and raised in San Diego, California. He got into music very young due to his family. He was a whistler as a boy, learning how to whistle at age 5 by copying his dad, Isaac, and brother, Jacob and including his whistling in his DJ sets. Isaac was born in Mexico City, Mexico and played guitar with his brothers while also always singing and whistling. Jacob and Bensussen's sister would also loudly play music in their house.

In High School friends would give him cassette tapes, allowing him to listen to songs from all over the globe, which included Turkey, Africa, India, Latin America, and Jamaica. During his teen years, he would explore and hang out in the Gaslamp district, not fitting in with his beach neighborhood with skaters and surfers.

Bensussen started becoming a DJ in the Gaslamp district when he was 17. He was inspired by DJ Shadow.

His sets often ruined the music vibe in the clubs, earning him the nickname "The Gaslamp Killer". The crowd sometimes would verbally and phsycially assault him.

After moving to Los Angeles in 2006, he helped found Low End Theory, "L.A.'s monolithic weekly showcase for uncut beat-driven tracks".

The Gaslamp Killer has played at Coachella Valley Music and Arts Festival, the Austin Psych Fest, the Decibel Festival, and the Voodoo Fest.

He produced Gonjasufi's debut album, A Sufi and a Killer, with Flying Lotus and Mainframe in 2010.