Juan Carlos "Juice" Ortiz (Theo Rossi) is the club's hacker and intelligence officer. Though Juice displays great technical prowess, he has also proven to be somewhat simple-minded when it comes to other tasks, often garnering him hazing from the other members.

He is also in charge of club surveillance and manages some of the club's intelligence and communication. He is seen as unreliable by Clay Morrow, the club president, and is often given menial tasks such as driving the transport truck. He sports a short mohawk and has Tribal designs tattooed on each side of his head.

Not being able to withstand the blackmail of Assistant U.S. Attorney Potter, Juice attempted to hang himself with a chain in the 7th episode of season 4 shortly after receiving a "Men of Mayhem" patch, but the branch broke, leaving him with a bad bruise on his neck noticed by Chibs, and then later shown to Jax at the clubhouse.