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In-Game Information
HP: --
Attack Damage: 3 (contact)
4 (explosion)
Misc. Information
Script: オコストボン
Romaji: Okosutobon
Programmer(s): Fabian
Series Information
Official Game Appearances: Mega Man 9
MaGMML Game Appearances: Megamix Engine
"A robot bomb that wakes up when megaman gets close, once awaken it will chase megaman and explode after some time"
―Note in Okosutobon's code, Megamix Engine

Okosutobon is an enemy from Mega Man 9. It is a sea mine robot that actively hunts after targets.

Okosutobon was first made available with the Megamix Engine, and subsequently the devkits for Make a Good Mega Man Level 3 and Make a Good 48 Hour Mega Man Level.


Okosutobon starts out by floating motionlessly, but when Mega Man attacks it or gets close enough, it will awaken and start swimming after him restlessly. After a while, it will start flashing white before exploding. It is limited, however, by its inability to go through walls, or exit water. No weapon is capable of harming Okosutobon.

Okosutobon has a number of creation code variables that affect its functionality:

  • speedLimit - The maximum speed an Okosutobon can reach (by default, 2.5).
  • accel - The rate at which Okosutobon accelerates.
  • harmEnemies - If set to true, Okosutobon's explosion will harm other enemies in addition to Mega Man.
  • deathTime - Controls the length of time it takes for an Okosutobon to detonate (by default, it takes four seconds).