He later returns in "The Christmas Special" as he captures the Park staff trespassing in East Pines Park on their way to a volcano to destroy the gift box. Initially thinking them to be plotting to prank him, he turns around and helps them after learning the severity of their mission by taking them to the entrance of the cavern leading to the volcano, warning them about its booby traps, and briefly holding off Quilgin and his men.
In "Thomas Fights Back", Gene and his goons steal the statue of Curtis Montgomery and was fooled by Thomas for cutting the gas of their golfcarts, removing the batteries from their walkie-talkies and cut the wire of the emergency phone.
Gene is a green vending machine with a green hat. Since he is a vending machine, snacks are seen through a glass mirror.