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Mega Man X4

From Mega Man Wiki
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Game Info
MMX4 - Box Art.jpg
Box Art
General information
Game Title(s):Mega Man X4, Megaman X4, Rockman X4
Publisher(s):Capcom (JP, NA), Virgin Interactive (PAL)
Release Date(s):
JP: August 1, 1997
NA: September 25, 1997
EU: October 13, 1997
Sega Saturn:
JP: August 1, 1997
NA: October 1, 1997
JP: December 3, 1998
NA: 1999
EU: 1999
Genre(s):Action, Platformer
Game mode(s):Single Player
Sega Saturn

Mega Man X4, known in Japan as Rockman X4 (ロックマンX4, Rokkuman X4) is the fourth entry in the main X series, developed by Capcom and released for the PlayStation and Sega Saturn in 1997, and later for Windows in 1998-1999. It is the first X era game exclusive to 32-bit consoles, introducing a new style that would be kept by the following two entries.


The aerial fortress Sky Lagoon comes under attack, causing a catastrophe as it falls on top of a city. Suspicion falls on Repliforce, but when the Maverick Hunters request an investigation, the militia refuses. As a result, Repliforce is branded Maverick. Mired in resentment and aiming for independence, Repliforce enters a large-scale conflict against the Hunters. While X and Zero try to control the situation, Sigma secretly fuels the confrontation from both sides...[1]


Name Sprite Description
X MMX4 - X.gif X is the main character. He is captain of the Maverick Hunters 17th Unit. His heart is constantly torn between a sense of duty to protect peace and a kindness that makes him hesitant to fight.[2]
Zero MMX4 - Zero.gif An SA-Class Hunter who is a close friend of X, being one of the few to understand him. He is the captain of the Special 0 Unit, and always stays calm and carries out his duties without hesitation.[2]
Double MMX4 - Double.png A novice Hunter who has joined the Maverick Hunters. His personality is rash and clumsy. As X's assistant, he provides various support.[2]
Iris MMX4 - Iris.png Colonel's younger sister. She was saved by Zero during this incident, and she gradually became attracted to him. She tries to stop the fight between her brother and Zero, but...[2]
Colonel MMX4 - Colonel.gif A young officer in Repliforce, an army made up entirely of Reploids. He is not only an excellent soldier, but also has a kind side that cares for his subordinates and his sister.[2]
General MMX4 - General.png The supreme commander of Repliforce, who is trusted and respected by all his soldiers. However, he suddenly starts a coup d'état and becomes hostile to X and the others.[2]
Sigma MMX4 - Sigma (2nd form).png A former Maverick Hunter leader, who became Maverick himself after an encounter with Zero. Sigma was thought to be eliminated, but now appears to be secretly pulling the strings of both Repliforce and the Maverick Hunters.
Dr. Light MMX4 - Dr. Light.gif The creator of X, who has left Light Capsules to deliver him Armor Parts years after his own passing.
Dr. Wily MMX4 - Dr. Wily.png A mysterious silhouette appearing in Zero's dreams. In reality, Dr. Wily is Zero's creator, and urges him to fulfill his destiny by destroying X.


Minor Enemies

Name Sprite Description
Batton Bone B81 MMX4 - Batton Bone B81.png
Beam Cannon MMX4 - Beam Cannon.png
Blast Raster MMX4 - Blast Raster.png
Death Guardian MMX4 - Death Guardian.png
Dejira MMX4 - Dejira.png
E-AT MMX4 - E-AT.png
Fly Gunner MMX4 - Fly Gunner.png
Giga Death MMX4 - Giga Death.png
Guardian MMX4 - Guardian.png
Hornet MMX4 - Hornet.png
Hover Gunner MMX4 - Hover Gunner.png
Ice Wing MMX4 - Ice Wing.png
Item Carrier MMX4 - Item Carrier.png
Kill Fisher MMX4 - Kill Fisher.png
King Poseidon MMX4 - King Poseidon.png
Knot Beret B MMX4 - Knot Beret B.png
Knot Beret G MMX4 - Knot Beret B.png
Knot Beret S MMX4 - Knot Beret S.png
Kyunbyuun MMX4 - Kyunbyuun.png
Mad Bull 97 MMX4 - Mad Bull 97.png
Magma boulder[conj.] MMX4 - Magma boulder.png
Mega Nest MMX4 - Mega Nest.png
Metal Gabyoall MMX4 - Metal Gabyoall.png
Metal Hawk MMX4 - Metal Hawk.png
Metall D2 MMX4 - Metall D2.png
Miru Toraeru MMX4 - Miru Toraeru.png
Obiiru MMX4 - Obiiru.png
Plasma Cannon MMX4 - Plasma Cannon.png
Prominence MMX4 - Prominence.png
Raiden MMX4 - Raiden.png
Spider Core MMX4 - Spider Core.png
Spike Marl MMX4 - Spike Marl.png
Spiky Mk-II MMX4 - Spiky Mk-II.png
Tentoroid BS MMX4 - Tentoroid BS.png
Tentoroid RS MMX4 - Tentoroid RS.png
Togerics MMX4 - Togerics.png
Tonboroid S MMX4 - Tonboroid S.png
Trap Blast MMX4 - Trap Blast.png
TriScan MMX4 - TriScan.png
Walk Shooter MMX4 - Walk Shooter.png
Yukidarubon MMX4 - Yukidarubon.png

Mini Bosses

Name Sprite Description Weakness
X Zero
DG-42L MMX4 - DG-42L.png
Eyezard MMX4 - Eyezard.png
Generaid Core MMX4 - Generaid Core.png
Tentoroid MMX4 - Tentoroid.png



Name Sprite Description Weapon Weakness
X Zero
Web Spider MMX4 - Web Spider.png Comes down from the ceiling by a thread and launches a web that homes in on X/Zero, which not only damages the Hunter but also renders him immobile until he is able to wiggle free. At half health, he gains a new pattern, spinning webs in the centre of the screen that he quickly scitters between diagonally, either continuing to fire homing webs or releasing small spiders that crawl up the walls.

His weakness can cause him to fall down and be briefly stunned if used on the thread he is hanging by, but only during his first phase.

Lightning Web Twin Slasher Kuuenbu
Cyber Peacock MMX4 - Cyber Peacock.png His weakness interrupts his attacks and causes him to teleport away immediately, potentially preventing him from ever attacking. Aiming Laser Soul Body Ryuenjin
Storm Owl MMX4 - Storm Owl.gif Flies in from different directions to use various attacks. His weakness interrupts his attacks and forces him to leave. Double Cyclone Aiming Laser Rakuhouha
Magma Dragoon MMX4 - Magma Dragoon.png His weakness resets his pattern, forcing him to jump over X/Zero and potentially preventing him from ever attacking. Rising Fire Double Cyclone Shippuuga/Raijingeki
Jet Stingray MMX4 - Jet Stingray.gif Floats down from the sky on either side of the room to release ground-tracing enemies and/or swoop down at X/Zero. He may also sink into the water and generate a vortex to draw X/Zero towards him. At half health, he gains another attack that allows him to fly vertically at X/Zero from above or below.

His weakness interrupts his attacks and causes him to leave immediately after floating down, potentially preventing him from ever attacking.

Ground Hunter Frost Tower Hyouretsuzan/Kuuenbu
Split Mushroom MMX4 - Split Mushroom.gif A fast opponent able to create holographics clones of himself. His weakness knocks him down and resets his pattern, forcing him to jump and cling to the opposite wall when he gets up and potentially preventing him from ever attacking. Soul Body Lightning Web Raijingeki
Slash Beast MMX4 - Slash Beast.png His weakness knocks him down and resets his pattern to attempting to lunge at X/Zero repeatedly. Twin Slasher Ground Hunter Kuuenbu
Frost Walrus MMX4 - Frost Walrus.gif His weakness briefly sets him on fire and resets his pattern. Frost Tower Rising Fire Ryuenjin

Other Bosses

Name Sprite Description Weakness
X Zero
Colonel (Memorial Hall) MMX4 - Colonel.gif Frost Tower Kuuenbu
Colonel (Space Port) MMX4 - Colonel.gif Frost Tower Kuuenbu
Double MMX4 - Double.gif Only fought by X. Attacking him with his weakness causes bouncing saw blades or horizontally moving saucers to spawn from his body, making the fight harder. Double Cyclone N/A
Iris MMX4 - Transformed Iris.gif Only fought by Zero. N/A Kuuenbu
General MMX4 - General.png Twin Slasher Kuuenbu
Sigma (1st form) MMX4 - Sigma (1st form).gif Rising Fire Ryuenjin
Sigma (2nd form) MMX4 - Sigma (2nd form).png Lightning Web Kuuenbu
Sigma (phase 3) Mini Bodies MMX4 - Sigma Mini.png Sigma's conscious is split between two main entities - an alien gunner (Sigma Gunner) and a giant head (Earth Sigma)- accompanied by three additional elemental-based heads, with the fight alternating between phases of fighting each form or dealing with the heads by themselves.

The gunner form may aim and fire multiple shots in a row, or one big laser that traces the floor; the giant head may inhale and spit out debris or blow X/Zero towards a wall of spikes on the right; the elemental heads appearing by themselves use different patterns depending on which head takes priority, with either the blue head tracing the ground with freezing breath, the red head spitting fire from the left side, or the electric head aiming plasma shots from the upper middle that split into electricity.

Both main entities have separate health bars, and must be destroyed individually, which removes them from the phase sequence; the elemental heads can be destroyed, but reappear on the next phase.

N/A Kuuenbu
Earth Sigma MMX4 - Earth Sigma.png Ground Hunter Shippuuga
Sigma Gunner MMX4 - Sigma Gunner.png Soul Body Kuuenbu


For X

Name Sprite Description
X-Buster MMX4 - X-Buster.png
Frost Tower MMX4 - Frost Tower.png
Ground Hunter MMX4 - Ground Hunter.png
Twin Slasher MMX4 - Twin Slasher.png
Lightning Web MMX4 - Lightning Web.png
Soul Body MMX4 - Soul Body.png
Aiming Laser MMX4 - Aiming Laser.png
Double Cyclone MMX4 - Double Cyclone.png
Rising Fire MMX4 - Rising Fire.png

For Zero

Name Sprite Description
Beam Saber File:MMX4 - Beam Saber.png
Raijingeki File:MMX4 - Raijingeki.png
Ryuenjin File:MMX4 - Ryuenjin.png
Hyouretsuzan File:MMX4 - Hyouretsuzan.png
Rakuhouha File:MMX4 - Rakuhouha.png
Shippuuga File:MMX4 - Shippuuga.png
Kuuenbu File:MMX4 - Kuuenbu.png
Kuuenzan File:MMX4 - Kuuenzan.png
Hienkyaku File:MMX4 - Hienkyaku.png
Tenkuuha File:MMX4 - Tenkuuha.png



Name Sprite Description
Energy Pellet File:MMX4 - Energy Pellet.png
Energy Capsule File:MMX4- Energy Capsule.png
Weapon Energy Pellet File:MMX4 - Weapon Energy Pellet.png
Weapon Energy Capsule File:MMX4 - Weapon Energy Capsule.png
1-Up File:MMX4 - 1-Up.png
Heart Tank File:MMX4 - Heart Tank.png
Sub-Tank File:MMX4 - Sub-Tank.png
EX Tank File:MMX4 - EX Tank.png
Boots Upgrade File:MMX4 - Boots Upgrade.png
Helmet Upgrade File:MMX4 - Helmet Upgrade.png
Armor Upgrade File:MMX4 - Armor Upgrade.png
X-Buster Upgrade File:MMX4 - X-Buster Upgrade.png
Jet Bike/Ride Chaser File:MMX4 - Jet Bike.png
Raiden Armor File:MMX4 - Raiden Armor.png
Eagle Armor File:MMX4 - Eagle Armor.png
X's Ultimate Armor File:MMX4 - X's Ultimate Armor.png
Zero's Ultimate Armor File:MMX4 - Zero's Ultimate Armor.png


Relation to other games

Ports, Remakes and Compilations

Mega Man X Legacy Collection

Icon Title Unlocked by Related Games
File:MMXLC - Way of the Saber.png Way of the Saber Use all of Zero's special saber techniques in a single playthrough of Mega Man X4. Mega Man X4
File:MMXLC - Fourth Armor.png Fourth Armor Obtain all four armor parts in Mega Man X4. Mega Man X4
File:MMXLC - Pew Pew.png Pew Pew Fire fully-charged shots using all of X's weapons in a single playthrough of Mega Man X4. Mega Man X4
File:MMXLC - Half the Saga.png Half the Saga Complete Mega Man X1, X2, X3, and X4. Mega Man X, Mega Man X2, Mega Man X3 and Mega Man X4
File:MMXLC - Fully Charged.png Fully Charged Obtain the EX Item, and have max. lives, energy, weapon energy, and full Sub Tanks in Mega Man X4. Mega Man X4
File:MMXLC - Tragic Destiny.png Tragic Destiny Complete Mega Man X4 (cannot be earned in Rookie Hunter mode). Mega Man X4
File:MMXLC - True Hero.png True Hero Complete Mega Man X4 as X without using the Ultimate Armor Mega Man X4
File:MMXLC - Promise Me, Zero.png Promise Me, Zero Complete X's story in Mega Man X4. Mega Man X4
File:MMXLC - He Brought Fists to a Mech Fight.png He Brought Fists to a Mech Fight Use a Ride Armor to score the final hit against Magma Dragoon in Mega Man X4. Mega Man X4
File:MMXLC - Mavericks After All.png Mavericks After All Complete Zero's story in Mega Man X4. Mega Man X4
File:MMXLC - He's Actually Called Vava.png He's Actually Called Vava Complete the opening stage of any game in both the English and Japanese versions. Mega Man X, Mega Man X2, Mega Man X3 and Mega Man X4
File:MMXLC - It Ain't Ova Till It's Nova.png It Ain't Ova Till It's Nova Use Nova Strike to score the final hit against a boss in Mega Man X4. Mega Man X4
File:MMXLC - It's Definitely Over.png It's Definitely Over Defeat Sigma Gunner and Earth Sigma in Mega Man X4 Mega Man X4

External Links


  1. Mega Man X4, Compendium of Rockman X. 2005.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Capcom Japan official website, New Products, Mega Man X4. 2000. (

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