Picopico-kun

The Picopico-kun (ピコピコくん) is the boss of the second Wily Castle stage of Mega Man 2. It is a guard system room with blocks that form into mini-robots, that was originally created by Dr. Light to protect his home. When Dr. Wily saw their effectiveness, he added a modified version of them to his fortress. They attack by simply flying toward Mega Man. When fourteen of these enemies are defeated, the room simply shuts down. Bubble Lead can defeat the robots in one hit, but as it may be difficult to hit them with it, it is recommended to use Metal Blade instead. As more of them are destroyed, the remaining ones will begin moving around the room faster.

Damage Data Chart
Amount of damage in units that each Pikopico-kun receives from each Special Weapon in Mega Man 2.

Other media
Picopico-kun appeared in Rockman: Dr. Wily no Inbou and has a cameo appearance in Mega Man Megamix.

Trivia

 * Pikopiko is a Japanese onomatopoeia, and kun is a Japanese honorific.
 * Picopico-kun is present in the data of Mega Man: Dr. Wily's Revenge, suggesting that it was planned to appear in the game.
 * Picopico-kun is named "Block Phoenix" in The Official Guide to Mega Man.
 * In Mega Man 10, a boss called the Block Devil uses a similar attack pattern.