Uriel Oliva, 18, was arrested recently after visiting with Santa at the Village Mall in Orange.
According to police, Oliva was under a court order not to associate with members of his street gang, engage in gang activity or hang out at the Village Mall when the photo was taken last Tuesday.
The photo showed Oliva and two other members of the Orange County Criminals gang. Oliva's probation officer reportedly noticed the photo on a keychain during a probation check.
Oliva, who will have a pre-trial hearing next month, has pleaded not guilty on three misdemeanor counts of violating court orders. He faces up to 18 months in jail.