PatTron is the robot descendant of Patrick Star from the year 4017. He appears in the episode "SB-129."
PatTron fully resembles Patrick, even donning the same type of shorts that his ancestor Patrick wore. The only difference between the two is PatTron has two heads, which both speak at the same time. He also has the ability to teleport.
His favorite hobby is jellyfishing. Proof of this is that in "SB-129," he is holding a jellyfish net when he teleports to the futuristic Krusty Krab and asks "Did somebody say jellyfishing?"
Role in episode
Squidward sees him and SpongeTron in the futuristic kitchen of the Krusty Krab when he is in the future.
Since PatTron has the ability to teleport to a place of his choosing, has an extra head, and his name is PatTron, he may be fully/partially robotic.
When PatTron teleports into the futuristic Krusty Krab kitchen, the effect that he makes has a similar coloration and design like the time machine. However, the sound emitted sounds more mechanical and electrical, further implying that PatTron is somewhat mechanical.
PatTron has one of the shortest cameos in SpongeBob SquarePants; about less than 5 seconds of screen time.