Pierobot

Pierobot (ピエロボット), also known as Pierobot, is a Pierrot robot enemy that walks on a large gear. Pierobot and Blocky were originally members of a robot circus, and they acted together in comedies. They appear in Metal Man's stage from Mega Man 2 and Mega Man II, and also appear as viruses in the Arcade Computer (ColorMan.EXE's stage) in Mega Man Network Transmission. However, the virus rides a ball instead of a gear.

Virus Stats
Below are the virus stats for Pierobot in the Battle Network game Mega Man Network Transmission.

Other media
Two Pierobots appear in the episode "The Big Game" from Captain N: The Game Master. Dr. Wily sends them to compete against the N Team in California Games to produce more energy for his machine. They participate in a BMX race and taunt Kevin and Lana by calling them slowpokes.

Trivia

 * The name Pierobot is a combination of the words pierrot and robot.
 * Pierobot is called Gear Clown in Nintendo Power issue #7 and in Captain N: The Game Master.