Bubble Lead

Bubble Lead (バブルリード) is Bubble Man's main weapon. It shoots a heavy bubble that rolls around on the ground. If used against Bubble Man in the final stages, it will actually replenish all of his health. Bubble Lead is Heat Man's weakness, but he is immune to it when he's fully ignited or when doing his fire charge attack. The Bubble Lead can also scale down walls, but can only do so if the bubble is rolling on the ground in the first place.

The Bubble Man Doc Robot from Mega Man 3 also uses Bubble Lead, along with the weapons from the other Robot Masters from Mega Man 2, but Mega Man cannot take it from him. Mega Man is also equipped with the Bubble Lead in the scenes shown by Rush in Mega Man 9's ending. Bubble Lead is the only weapon that can damage the Alien in Mega Man 2, as all other weapons will fully replenish it's health.

Damage Data Chart
Known damage values in units for Mega Man 2.


 * *Any data with a "+" represents the weapon actually restoring the boss's health.

Bosses Weak Against Bubble Lead

 * Heat Man: Mega Man 2, Mega Man: Dr. Wily's Revenge and Mega Man 2: The Power Fighters
 * Alien: Mega Man 2
 * Buster Rod. G: Mega Man: The Wily Wars
 * Fire Snakey: Mega Man: The Wily Wars

Bosses Immune To Bubble Lead

 * Air Man: Mega Man 2
 * Boobeam Trap: Mega Man 2
 * Mecha Dragon: Mega Man 2
 * Metal Man: Mega Man 2
 * Quick Man: Mega Man 2 and Mega Man: Dr. Wily's Revenge
 * Wood Man: Mega Man 2
 * Enker: Mega Man: Dr. Wily's Revenge
 * Wily Machine: Mega Man 2 and Mega Man: Dr. Wily's Revenge
 * Buster Rod. G (2nd Encounter): Mega Man: The Wily Wars
 * Hyper Storm. H: Mega Man: The Wily Wars
 * Wily Machine 1 and 2: Mega Man: The Wily Wars

Trivia

 * There has been some debate over the weapon's real name. Some say it is Bubble Lead (pronounced led, as in a lead pencil), signifying that the bubble is made of heavy lead. Others say it is Bubble Lead (pronounced leed, as in leading a horse to water), signifying that the bubble can lead Mega Man since it travels along in front of him, and in fact can be used to find the hidden floors in one of the Wily Levels at the end of MM2. The Japanese name of the weapon is pronounced in this latter way.
 * The Bubble Lead has a similar appearance to the Bubble Bomb in MegaMan V.