Fremont was a rejected spy who appeared in the episode "Evil Professor". The girls thought he was a professor at Malibu University for a course called Espionage 101, since he claimed to be a "world renowned secret agent". But after their arrest and rescue by Jerry, they found out that he was actually a spy reject. Every major spy agency in the world had rejected his application.
In addition to his sub-standard espionage skills, he also was an incompetent engineer. The Spaceplane he built fell apart before being used.
His Catsuit was black with red.