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Split Mushroom

From Mega Man Wiki
Maverick Info
MMX4 - Split Mushroom Art.png
Artwork from Mega Man X4.
Stage portrait(s).
General information
Name(s):Split Mushroom
Title(s):Little Demon of the Wasteland,[1] Little Devil of the Ruins[2]
Appearances:Mega Man X4
Game Info
Weapon(s):Soul Body/Kuenbu & Kuenzan
Weakness(es):Lightning Web/Raijingeki
Stage(s):Bio Laboratory
Voice (JP):Mari Maruta

Split Mushroom (スプリット・マシュラーム) is a Maverick from the X era, appearing as one of the main bosses in Mega Man X4. He is a clone-themed Reploid based on a mushroom, who attacks with clones of himself and dangerous spores. He is a decommissioned lab tech Reploid who was revived by Sigma.

In the Games

Mega Man X4

Sprite from Mega Man X4.

Split Mushroom debuts in Mega Man X4 as one of the eight Mavericks on the Stage Select screen. He is a laboratory manager Reploid who was decommissioned but revived by Sigma, and who serves as the boss of Bio Laboratory. He alternates between launching light clones at the player and running formations with an identical clone. Defeating Split Mushroom grants Soul Body to X, and Kuenbu and Kuenzan to Zero. His weakness is Lightning Web or Raijingeki from Web Spider, which fries him and resets his pattern. A boss attack rematch with Split Mushroom later occurs in Final Weapon 3.

Mega Man X DiVE

In Mega Man X DiVE, Maverick Data of Split Mushroom appears as a boss in Chapter 14 in Co-op Mode, being fought in Energen Crystal 14-2.

Other Game Appearances

Other Media

  • In the Rockman X4 manga, Split Mushroom reprises his role from Mega Man X4.
  • In the Archie Mega Man comic, Split Mushroom appears in the "Worlds Unite" arc as one of the many Mavericks resurrected in Sigma's army.

Official Data

Mega Man X4

Little Devil of the Ruins
Split Mushroom
The administrator Reploid of a bio laboratory. When the laboratory was shut down, he was supposed to be disposed of, but he has been brought back to life and has become an underling of Sigma. Soon after Repliforce's coup, the lab was converted into a fortress and he began attacking intruders just for fun.[3][4][5]

Compendium of Rockman X

MMX4 - Split Mushroom Art.png
Bio Laboratory Split Mushroom
Weapon: Soul Body/Kuuenbu + Kuuenzan Weakness: Lightning Web/Raijingeki
Profile: Split Mushroom resembles a mushroom and is the one behind the spiral tower. He attacks with unique techniques such as deploying clones and spreading spores.
Attack: Effect:
Clone Attack Sticks to the wall, deploying glowing clones that attack the player.
Clone Attack 2 Deploys an identical clone. It runs and jumps repeatedly, and will perform a spinning dash from left to right, or fall after jumping to attack with his poison.
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Mega Man X Legacy Collection

MMX4 - Split Mushroom Art.png Split Mushroom
When his laboratory was shut down, Split Mushroom was decommissioned, but someone has resurrected him to fortify the lab and aid Repliforce's coup. He has the cruel, playful nature of a child, and sees the destruction of intruders as the best game of all.

Mega Man X DiVE

MMXD - Split Mushroom Art.png
Split Mushroom
Dubbed the "Little Devil of the Ruins", Split Mushroom was once the administrator of a bio laboratory, but when the facility was shut down, he was decommissioned as a result. Split Mushroom was later resurrected by Sigma as a Maverick to reclaim control of the lab. He would attack whoever entered the lab for fun and as a result, drew the attention of the Maverick Hunters.

Behind the Scenes


Language Name Origin
Japanese Split Mushroom (スプリット・マシュラーム) "Split" refers to his ability to split himself into clones.


  1. MM25: Mega Man & Mega Man X Official Complete Works. 2013.
  2. Mega Man X DiVE. 2020.
  3. (Archived) Capcom Japan official website, New Products, Rockman X4. 2000. (
  4. Comic BomBom Special #116: Rockman X4 Saikyou Daizukan. October 1997.
  5. Televi Magazine Great Hyakka #103: Rockman X4 Himitsu Daizukan. 1997.