This is a list of enemies from Mega Man 4.
Enemies
| Name |
|---|
| 100 Watton |
| Amoeba |
| Battan |
| Battonton |
| Biree |
| Boulder |
| Bubble Bat |
| Bug Copter |
| Dompan |
| Gachappon |
| Giant Escargot |
| Gyotot |
| Haehaey |
| Helipon |
| Hover |
| Inorm |
| Jumbig |
| Kabatoncue |
| Ladder Press |
| M-422A |
| Manta |
| Metall EX |
| Metall Swim |
| Minoan |
| Moby |
| Mummira |
| Pakatto 24 |
| Ratton |
| RingRing |
| Roader |
| Sasoreenu |
| Sea Mine |
| Shield Attacker |
| Skuller |
| Skulmet |
| Sniper Joe |
| Spine |
| Super Ball Cannon |
| Swallown |
| Togehero |
| Tom Boy |
| Totem Polen |
| Umbrella Guard |
| Up'n'Down |
| Wall Blaster |
| Whapper |
Robot Masters
| Robot Masters | Special Weapon | Weakness |
|---|---|---|
| Bright Man | Flash Stopper | Rain Flush |
| Toad Man | Rain Flush | Drill Bomb |
| Drill Man | Drill Bomb | Dive Missile |
| Pharaoh Man | Pharaoh Shot | Flash Stopper |
| Ring Man | Ring Boomerang | Pharaoh Shot |
| Dust Man | Dust Crusher | Ring Boomerang |
| Dive Man | Dive Missile | Skull Barrier |
| Skull Man | Skull Barrier | Dust Crusher |
Bosses
| Bosses | Weakness |
|---|---|
| Mothraya | Ring Boomerang |
| Square Machine | Dust Crusher |
| Cockroach Twins | Drill Bomb |
| Cossack Catcher | Dust Crusher |
| Metall Daddy | Dust Crusher |
| Tako Trash | Ring Boomerang |
| Wily Machine No. 4 |
Ring Boomerang (First form) / Drill Bomb (Second form) |
| Wily Capsule | Pharaoh Shot/Ring Boomerang |