Johnny is a young man with long, shaggy black hair. He wears a green and brown camouflage shirt, a pair of red shorts, and brown shoes.
He contracted syphilis from an unknown female companion. As referenced from his specific brand of syphilis, he had multiple partners while he was with Nikki. It is clear that he didn't get it from Nikki as her name was not in the STD registry.
Johnny first met Nikki Wald in high school and they began a shoplifting spree (before the fourth season). They were eventually caught and she testified against him for a reduced sentence. Later, Johnny and Nikki rekindled their romance and made a plan to rob people so they could buy a boat and sail off into the sunset. They tended to target tourists, thus earning them the nickname "The Vacation Robbers."
- "Living the Dream" (unseen)
Johnny and Nikki's series of robberies escalate to murder after one of their victims interrupts them and is incidentally shot in the head during a struggle. They begin to be referred to as the "Vacation Murderers."
- "Remains to Be Seen" (unseen)
They commit another murder with Johnny as the shooter, and steal everything they can carry. Later, Dexter identifies Johnny after he accidentally cuts himself on a cactus, leaving blood evidence.
He and Nikki are suspected of gunning down Frank Lundy and Detective Debra Morgan, leaving Lundy dead and Morgan alive. Sergeant Batista takes advantage of a reporter, Christine Hill, by telling her about Johnny's syphilis and multiple partners in an attempt to cause a rift in their relationship. When Nikki sees the news article however, she overreacts due to her meth addiction and shoots Johnny, ending his reign of terror over the tourists in Miami.
- Unnamed husband (shot in the head)
- Rad Faruche (first shown body, shot in the back of the neck)
- Colony Hotel
- Nikki Wald
- Vacation Murderers
- Vacation Murders Case
- Vizcaya Reef Hotel
- Vacation Murderers Shootout
- "Living the Dream" (not seen)
- "Remains to Be Seen" (not seen)
- "Blinded by the Light"
- "Dirty Harry" (corpse)