Trey and Cruz are two former criminal accomplices of Robby Keene and minor antagonists in Cobra Kai.
Trey and Cruz worked with Robby to make money through illegal means, such as stealing a man's computer and selling it online.
When Robby got a job at LaRusso Auto Group, Trey and Cruz encouraged Robby to use his position to help them rob the car dealership. However, Robby turned against the plan after being treated like family by Daniel LaRusso. On the night they were supposed to rob the dealership, Robby refused to go through with it and attempted to use his karate training to fight off Trey and Cruz, only for the two to overpower him through physical strength alone. However, Robby pointed out to the two that a security camera was capturing footage of their fight, forcing the two to flee.
Trey and Cruz later crossed paths with Robby again when Robby caught them trying to steal the phones of the members of a country club. Robby attempted to stop them, only to be grabbed and put in an arm hold by Trey and Cruz's unnamed third accomplice. However, Daniel LaRusso then showed up and used his karate skills to take out all three of them. It is unknown what happened to them afterward, but it is likely they were arrested and jailed for their villainous actions.