Kerog (ケロッグ Keroggu), also known as Croaker,[1] is a robotic frog found in Bubble Man's stage in Mega Man 2. It was originally part of an underwater robot carnival along with Claw. They spit out three Petit Kerogs. Even if there are multiple large Kerogs, as long as at least one Petit Kerog is on screen, they will not release any more. The Petit Kerogs are explosive in Super Adventure Rockman. In Mega Man: The Wily Wars, Kerogs are also found in Mega Water S's stage, as well as the second Wily Tower Stage.

Hits Data Chart

Amount of shots/hits from Special Weapons it takes to destroy a Kerog.

Mega Man 2
Mode Mega Buster Metal Blade Air Shooter Bubble Lead Quick Boomerang Crash Bomber Time Stopper Atomic Fire Leaf Shield
Normal 5 5 0 3 3 0 Y 5:2:1 0
Difficult 10 10 0 5 5 0 Y 10:4:1 0
Mega Man: The Wily Wars
Mega Buster Rolling Cutter Super Arm Ice Slasher Hyper Bomb Fire Storm Thunder Beam
10 10 ? 0 0 4 5
Needle Cannon Magnet Missile Gemini Laser Hard Knuckle Top Spin Search Snake Spark Shock Shadow Blade
5 5 5 4 0 5 0 5
  • Damage values for Mega Man 2's weapons in The Wily Wars are equivalent to those of its "Difficult" setting.

Other media

Kerog appears briefly in the Rockman: Dr. Wily no Inbou manga, Mega Man #9 and also has a cameo appearance in Worlds Collide as one of the robots in the Skull Egg Zone.


  • Kerog is a play of the words kero (the sound a frog makes, ribbit) and frog (フロッグ).
  • It is believed that the frog Shadow Man summons in Mega Man 2: The Power Fighters is a Kerog. He is also seen riding it in the beginning of the Robot Master battle in Worlds Collide.
  • As if by accident, the book How to Draw Nintendo Heroes and Villains mislabeled Bowser as "Kerog."


Similar enemies


  1. 1.0 1.1 Mega Man 2 instruction manual for the U.S.