Mole Borer is a mini-boss in the first Mega Man X game in Armored Armadillo's stage. Only two appeared in the game.
The Mole Borer's spiked roller will kill Mega Man X in a hit on contact.
The best way is to shoot from behind him and Mega Man X shouldn't shoot him once there are Mets in the way. If it falls into spikes, it'll die instantly. However, X shouldn't underestimate him as it can be a threat in the early stage.
Another one is to use Fire Wave and it'll do great deals of damage at him.
- The Subtank is located behind the first Mole Borer after Mega Man X avoids him and letting him past.