Professor Bug is an evil and greedy professor who is played by Pablo, previously known for reprogramming robots to turn evil. He lives in a lair in Mega City. Currently, Professor Bug is willing to do good rather than evil, since he was defeated by Robot Repairman Austin in his final evil scheme.
Professor Bug is mostly of a blue color. His suit is black with a bug emblem on it. He wears a pair of goggles and a silver hat made to look like a screw. He wears black gloves.
Pablo has only played as Professor Bug in two episodes of The Backyardigans: Robot Rampage: Part 1 and Robot Rampage: Part 2, both from season four.
- Title card
- Professor Bug dancing with the robots
- Professor Bug dancing on the table
- Professor bug and Robot Austin
- With Robot Repairman Austin on the DVD!
- Him hiding behind Resident Uniqua's bush