Big Fish is an enemy originally appearing in the third Wily stage from Mega Man 2. It flies up from pits, then falls down. Despite its low health, only Quick Boomerang and Crash Bomber are capable of harming it. Curiously, Needle Cannon can stick to the enemy, too, and gives feedback as if it harms the enemy, but deals no damage to the Big Fish.
- The Big Fish's sprite in Mega Man Maker is an 8-bit recreation of its Mega Man: The Wily Wars sprite.
- The Big Fish was originally meant to be a developer only enemy and never released to the public, but they decided to in the end.
- Big Fish can be carried by objects. Its unknown if its intended.
- If stuff like Falling Platform is put right where Big Fish's path ends under him, it can destroy him without any weapon.