Puffy (blowfish)

Puffy (プクール) is a virus from the Mega Man Battle Network series that attacks with bouncing balls/bubbles. If the bubbles make contact with its target, the bubbles cause a giant explosion, dealing massive damage. The bubbles can be destroyed. Some variants of the virus float around and cause damage by mere collision.

Puffy
Puffy is blue and releases blue balls that creates bubbles around its area when destroyed.

Buffy/Puffy2
Buffy (プクールボウ) is red and releases red balls that creates flames around its area when destroyed.

Poofy
Poofy is purple.

BigPuffy
BigPuffy is found in Mega Man Network Transmission as a miniboss in the Waterworks. It is a large version of a Puffy that floats around and never fires any projectiles. Once BigPuffy is destroyed, 4 PuffyBobs are released.

PuffyBob
PuffyBob is found in Mega Man Network Transmission as part of a miniboss in the Waterworks. 4 PuffyBobs appear once BigPuffy is destroyed. They are smaller than BigPuffy. They also float around and never fire anything. Once a PuffyBob is destroyed, 4 MiniPuffys are released.

MiniPuffy
MiniPuffy is found in Mega Man Network Transmission as part of a miniboss in the Waterworks. 4 MiniPuffys appear once a PuffyBob is destroyed. They also float around and never fire anything. They are about the same size as Puffys.

Trivia
*This virus shares its English name with another virus from Mega Man Battle Network 6 (Puffy).
 * Puffy also appears in Mega Man Zero 3, when the player trades with Mega Man Battle Network 4.