Kato

Kato (also known as Rainbow Parakeet) is one of Mr. Drake's followers. He is an eccentric criminal that believes that "destruction is the purest form of art".

Rainbow Parakeet appeared as detective Randolf Holmes (a parody of Sherlock Holmes) in the '80s series.

Appearance
He has green hair, a white coat plus white glasses.

Role in "Neon Express"
He planted a hyper-acceleration device on the Neon Express, causing the robot train to run out of control. With the help of Astro, the virus is taken off.

Jetter Mars
Kato didn't appear in Jetter Mars, but he does have a character similar to him named "Jam Bond."