| Name | Image | Locations | Info
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| Amenhopper | File:Mega Man X Enemy Amenhopper.png | Ocean Stage | These little guys represent frogs. They can jump far distances and can glide across water. Their main form of attack is to simply crash into you.
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| Anglerge | File:Mega Man X Enemy Anglerge.png | Ocean Stage | Large submarine which attempts to crash into X, as well as shoot missiles and harpoons.
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| Armor Soldier | File:Mega Man X Enemy Armor Soldier.png | Snow Mountain Stage | Humanoids that specialize in riding mechs, similar to those X can ride in. It doesn't attack you unless it jumps into a Mech, so it really doesn't pose much of a threat.
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| Axe Max | File:Mega Man X Enemy Axe Max.png | Forest Stage | These humanoids carry small axes, which they use to hurl large rotating discs at X. You'll always find these guys behind their disc machines, which you can destroy before reaching Axe Max (however, the discs will respawn, so take him out quickly).
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| Ball De Voux |  | Highway Stage | Robots that walk on two large legs, they start off as a small ball and then roll out of it. They are extremely weak and can be taken out with one or two Buster shots.
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| Batton Bone | File:Mega Man X Enemy Batton Bone.png | Gallery Stage | Robots that resemble small bats, these creatures like to hang out in tunnels. They start in a neutral state, and then try to attack X by crashing into him as he gets closer to them. They're fairly weak so you can take them out in a couple of shots.
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| Batton M-501 | File:Mega Man X Enemy Batton M-501.png | Gallery Stage | Same as Batton Bones, but they're fairly larger. Like Batton Bones, they start off in a neutral state and then try to crash into X. They're just as weak as their smaller bretheren.
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| Bee Blader |  | Highway Stage | Large helicopter resembling a bee, this thing can drop Ball De Vouxs and shoot at X with its machine gun.
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| Crag Man | File:Mega Man X Enemy Crag Man.png | Forest Stage | Robots that form from a large chunk of rock. You can notice them easily, and once you get close to them, they'll fall and form into a humanoid. Its only attack is to throw a rock which does a fair amount of damage, so take him out quickly.
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| Creeper | File:Mega Man X Enemy Creeper.png | Forest Stage | Caterpillar-like creature that tries to crash into X. Very similar to the Iworm.
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| Cruiziler | File:Mega Man X Enemy Cruiziler.png | Ocean Stage | Large ship which must be destroyed (by shooting at its blue light) in order to reach Launch Octopus' heart tank. Many Sky Claws hover above, and the Cruziler can also shoot missiles.
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| Crusher |  | Highway Stage | These flying purple robots have spiked ends and try to crash into X from above. They can be fairly annoying in groups, so try to take them out as much as possible.
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| Dig Labour | File:Mega Man X Enemy Dig Labour.png | Factory Stage | Humanoid that resembles a miner. His only attack is to throw pick axes at you, so avoid them as best you can.
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| Death Rogumer | File:Mega Man X Enemy Death Rogumer.png | Sky Stage | Large cannon that fires missiles at X.
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| Dodge Blaster | File:Mega Man X Enemy Dodge Blaster.png | Tower Stage | These annoying cannons stay on walls and will immediately retreat if you get near or try to jump in front of one. The best thing to do is to charge up a full Buster shot, jump, and release, as you'll hit the Dodge Blaster's bottom part no matter what.
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| Flamer | File:Mega Man X Enemy Flamer.png | Sky Stage | A flame thrower which you'll usually find on moving platforms. The best thing to do is to take them out from a distance, as their flames do a fair amount of damage.
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| Flammingle | File:Mega Man X Enemy Flammingle.png | Power Plant | Annoying robots that resemble birds, these things will try to hurl saw blades at you. They can take a good amount of damage, so take your time when dealing with them.
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| Gulpfer | File:Mega Man X Enemy Gulpfer.png | Ocean Stage | Annoying puffer fish-like robots which will attempt to "eat" X. If you get stuck inside, quickly keep shooting until the Gulpfer is destroyed.
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| Gun Volt |  | Highway Stage, Power Plant | Large robot with two hind legs. It can either hurl balls of electricity (which go across the ground) or shoot two missiles at you. It can also take a large amount of damage.
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| Hoganmer | File:Mega Man X Enemy Hoganmer.png | Factory Stage | Humanoid with a mace and shield. It will try to hit X from short or long distances. To destroy him, simply trick him by jumping in air, which will cause him to expose himself, and then nail him with a fully-charged Buster shot.
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| Hotarion | File:Mega Man X Enemy Hotarion.png | Power Plant | A fire fly that moves extremely quickly and tries to crash into X. You can't really destroy them because they move so fast, so just try to dodge them.
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| Iworm | File:Mega Man X Enemy Iworm.png | Forest Stage | Small robot that resembles a worm, it poses almost no threat since it moves so slow and is so weak.
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| Jamminger |  | Tower Stage | Rapidly-moving robot with a propeller attached to its back, this creature will attempt to crash into you at a very high speed.
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| Ladder Yadder | File:Mega Man X Enemy Ladder Yadder.png | Tower Stage | Small robot resembling a spider or lizard, it only exists to climb ladders. You'll have to destroy them before climbing the ladder they're on, of course.
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| Lift Cannon | File:Mega Man X Enemy Lift Cannon.png | Sky Stage | Cannons that shoot plasma, you'll find them mainly on moving platforms.
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| Mad Pecker | File:Mega Man X Enemy Mad Pecker.png | Forest Stage | Wood pecker robot that tries to throw seeds at X. You'll find them at high distances.
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| Mega Tortois | File:Mega Man X Enemy Mega Tortois.png | Tower Stage | A very large robot resembling a tortoise, this thing shoots missles out of its shell which will land on X. They have a large amount of health, so destroy them as quickly as you can.
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| Metal Wing | File:Mega Man X Enemy Metal Wing.png | Gallery Stage | Robot birds that will only try to fly into X. They're very weak and can be destroyed in a couple of shots.
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| Mettool C-15 | File:Mega Man X Enemy Mettool C-15.png | Gallery Stage | Small little robot hidden beneath a hardhat, it will peak out and try to shoot X: use this exposure to shoot back.
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| Mole Borer | File:Mega Man X Enemy Mole Borer.png | Gallery Stage | Large dig machine which must be destroyed in order to reach Armored Armadillo's heart tank.
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| Planty | File:Mega Man X Enemy Planty.png | Forest Stage | A Mettool with a bush on its head, it will try to throw Iworms at X.
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| Ray Bit | File:Mega Man X Enemy Ray Bit.png | Snow Mountain Stage | Robot resembling a rabbit, this creature can shoot a laser from its head and will also attempt to crash into X.
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| Road Attacker |  | Highway Stage | Humanoids that drive red cars attached with spikes. They try to shoot or drive into X.
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| Rolling Gabyool | File:Mega Man X Enemy Rolling Gabyool.png | Factory Stage | Rotating claw robot that hangs from the ground or ceiling, it will try to crash into X.
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| RT-55J | File:Mega Man X Enemy RT-55J.png | Forest Stage | Large humanoid which uses its large claw in order to grab and attack X. Has an extremely large amount of health and is considered Sting Chameleon's sub-boss.
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| Scrap Robo | File:Mega Man X Enemy Scrap Robo.png | Factory Stage | Junk robot that tries to crawl with one arm, this thing tries to shoot a laser at X.
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| Sea Attacker | File:Mega Man X Enemy Sea Attacker.png | Ocean Stage | Sea horse robot that tends to stay in groups. It will roll out from the ground and then attempt to crash into X.
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| Sine Faller | File:Mega Man X Enemy Sine Faller.png | Tower Stage | A smaller version of the Jamminger which will try to crash into X.
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| Sky Claw | File:Mega Man X Enemy Sky Claw.png | Sky Stage | Flying robot with two arms, it will try to grab you in mid-air, self-destruct, and then release you, usually over a pit.
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| Slide Cannon | File:Mega Man X Enemy Slide Cannon.png | Tower Stage | Cannon that emerges from the wall and shoots large energy orbs.
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| Snow Shooter | File:Mega Man X Enemy Snow Shooter.png | Snow Mountain Stage | A thin robot which attempts to hurl large and small snowballs at X.
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| Spikey |  | Highway Stage | A large ball-shaped robot with spikes, this thing will try to roll into you and then explode. They're fairly weak and can be destroyed in a couple of shots.
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| Thunder Slimer | File:Mega Man X Enemy Thunder Slimer.png | Power Plant | Large robot encased in a bubble, this thing can shoot electricity and attempt to shoot bubbles on the ground, which can get X stuck. This is the sub-boss for Spark Mandrill's stage.
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| Tombot |  | Highway Stage, Snow Mountain Stage | Small hornet-like robot which tries to drop bombs on X from above.
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| Turn Cannon | File:Mega Man X Enemy Turn Cannon.png | Power Plant | Cannon which rotates and shoots energy orbs in three different directions.
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| Utuboros | File:Mega Man X Enemy Utuboros.png | Ocean Stage | Large snake-like robot with its head and tail being its weakpoints. You must defeat one for Launch Octopus' heart tank and another to progress through the stage.
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