Mega Man: Dr. Wily's Revenge/Enemies

List by endurance
Enemies that are defeated with a single Mega Buster shot: Enemies that are defeated with just a few Mega Buster shot: Hard enemies that are defeated with several Mega Buster shot: Enemies immune to the regular Mega Buster:
 * Metall
 * Pipi
 * Bunby Heli
 * Screw Driver
 * Scworm
 * Kaminari Goro
 * Suzy
 * Cutting wheel
 * Mole
 * Sniper Joe (10 hits)
 * Bigeye (8 hits)
 * Changkey Maker
 * Changkey
 * Super Cutter
 * Gabyoall

List by origin

 * Robots appearing in both Mega Man 1 and Mega Man 2: Changkey, Metall, Sniper Joe.
 * Robots from Mega Man 1: Suzy, Screw Driver, Super Cutter, Gabyoall, Bigeye, Bunby Heli.
 * Robots from Mega Man 2: Scworm, Mole, Pipi, Kaminari Goro, Changkey Maker.
 * Robot exclusive to Rockman World 1: Cutting Wheel.