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Slash Beast

From Mega Man Wiki
Maverick Info
MMX4 - Slash Beast Art.png
Artwork from Mega Man X4.
Stage portrait(s).
General information
Name(s):Slash Beast, Slash Beastleo
Title(s):Steel King of Destruction[1]
Appearances:Mega Man X4
Game Info
Weapon(s):X4 Twin Slasher
X4 Shippuuga
Weakness(es):X4 Ground Hunter
X4 Raijingeki
Stage(s):Military Train
Voice (JP):Takashi Nagasako

Slash Beast, known as Slash Beastleo (スラッシュ・ビストレオ) in Japan, is a Maverick from the X era, appearing as one of the main bosses in Mega Man X4. He is a blade-themed Reploid based on a lion, who attacks with his immense agility and razor-sharp claws. He is a member of Repliforce who participates in their coup d'état.

In the Games

Mega Man X4

Sprite from Mega Man X4.

Slash Beast debuts in Mega Man X4 as one of the eight Mavericks on the Stage Select screen. He is a fearsome member of Repliforce who serves as the boss of Military Trian. His attacks are all quite dangerous, but he often pauses to roar, giving the player a chance to strike. Defeating Slash Beast grants Twin Slasher to X and Shippuga to Zero. His weakness is the Ground Hunter from Jet Stingray, which slips him and breaks the claws on his feet; Zero has no equivalent weakness for him, though Raijingeki deals heavy damage. A boss attack rematch with Slash Beast later occurs in Final Weapon 3.

Other Game Appearances

Other Media

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

Official Data

Mega Man X4

Steel King of Destruction
Slash Beast
A violent, tough-guy Reploid who always tries to be number one. He enlisted to show off his power, wanting to go on rampages. He doesn't always get along with the other Repliforce captains, but even so he's proven to be a bold and dependable soldier who fears no enemy. In the coup, he is assigned to take charge of defending a military supply train.[2][3][4]

Compendium of Rockman X

MMX4 - Slash Beast Art.png
Military Train Slash Beast
Weapon: Twin Slasher/Shippuuga Weakness: Ground Hunter/Raijingeki
Profile: A Maverick with the appearance of a lion. Within Repliforce, he is known for his ferocity, slashing everything with his steel claws and fangs. He was put in charge of escorting military trains for the rebellion.
Attack: Effect:
Jump Attack Jumps and suddenly descends vertically.
Charge Deploys claws before dashing back and forth, stopping to stick to the wall.
Twin Slasher Spins his body to fire two wave shots.
{{{attack4}}} {{{effect4}}}
{{{attack5}}} {{{effect5}}}
{{{attack6}}} {{{effect6}}}
{{{attack7}}} {{{effect7}}}

Mega Man X Legacy Collection Gallery

MMX4 - Slash Beast Art.png Slash Beast
Perhaps the wildest and most dangerous combatant in Repliforce. His reason for joining up was purely to satisfy his urge to carve up his enemies, and on the battlefield he is known for fearlessly challenging enemies even twice his size.
He supports the coup by running guard duty on military supply trains carrying weapons and ammunition to Repliforce units.

Behind the Scenes


Language Name Origin
Japanese Slash Beastleo (スラッシュ・ビストレオ) A beast is a term for a large or dangerous animal. Leo is the fifth sign of the zodiac, associated with the mythological Nemean lion.
English Slash Beast


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