Octobulb

Octobulb, known as Octo Pachipachi (オクトパチパチ) in Japan, is a miniboss in Mega Man 10. It is a large lightbulb with eight wires coming from it, suggesting an octopus-like appearance. It appears in Sheep Man's stage, as well as the second Wily stage.

Octobulb is only vulnerable when it is illuminated, which occurs by charging electricity via running on one of the two treadmills in its lair. When its electricity runs out, it produces electric shocks which run back and forth along its wires. Octobulb also creates two small lightbulb-type enemies called Little Pachipachi (リトルパチパチ), which follow the player during the fight. Defeating both enemies causes two more to be created.

On higher difficulties, the amount of time Octobulb remains lit up decreases. Multiple charges are needed in order to have time to shoot and destroy it.

Due to the amount of hits, Water Shield and Triple Blade work very well on most minibosses.