Born Jeffrey Campbell and known for performing under his stage names Assassin, Agent Sasco, Agent 006, or Agent 00, he is a reggae deejay. He co-founded a label called Boardhouse records in 2008.
Assassin became his nickname during high school.
He married Nicole Campbell. He has three children and frequently posts about them on social media.
He was featured in Kanye West's song "I'm In It" on the 2013 album Yeezus. He also contributed to Kendrick Lamar's "The Blacker The Berry" in 2015.