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Frost Walrus

From Mega Man Wiki
Maverick Info
MMX4 - Frost Walrus Art.png
Artwork from Mega Man X4.
Stage portrait(s).
General information
Name(s):Frost Walrus, Frost Kibatodos
Title(s):Arctic Rumbler,[1] Rumbler of the Far North[2]
Appearances:Mega Man X4
Inspiration:Walrus/Sea lion
Game Info
Weapon(s):X4 Frost Tower
X4 Hyouretsuzan
Weakness(es):X4 Rising Fire
X4 Ryuenjin
Stage(s):Snow Base
Voice (JP):Kazuo Oka

Frost Walrus, known as Frost Kibatodos (フロスト・キバトドス) in Japan, is a Maverick from the X era, appearing as one of the main bosses in Mega Man X4. He is an ice-themed Reploid based on a walrus (or sea lion in Japan), who attacks with icicles and his giant size. He is a member of Repliforce who participates in their coup d'état.

In the Games

Mega Man X4

Sprite from Mega Man X4.

Frost Walrus debuts in Mega Man X4 as one of the eight Mavericks on the Stage Select screen. He serves as the boss of the Snow Base stage. The game's Japanese manual states he is a troublesome member of Repliforce who is borderline Maverick, and goes on a rampage in polar regions as part of the coup.[3]

Frost Walrus's attacks are slow, but have wide coverage across the arena. Defeating Frost Walrus grants Frost Tower to X and Hyoretsuzan to Zero. His weakness is the Rising Fire or Ryuenjin from Magma Dragoon, which melts his icicles and resets his pattern. A boss attack rematch with Frost Walrus later occurs in Final Weapon 3.

Mega Man X DiVE

In Mega Man X DiVE, Maverick Data of Frost Walrus appears as a boss in Chapter 15 in Co-op Mode, being fought in Snow Base 15-2.

Other Game Appearances

Other Media

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

Official Data

Source Data
Mega Man X4 He protects the secret weapon which lies inside the snow base.
Rockman X4 manual
Rockman X4 website[4]
Repliforce's problem child. He was about to be disposed of as a Maverick, but was spared by General and became a soldier. He welcomes and enjoys this rebellion because he believes it is a military man's duty to go on a rampage.[JP]
Comic BomBom Special #116: Rockman X4 Saikyou Daizukan ...[JP]
Televi Magazine Great Hyakka #103: Rockman X4 Himitsu Daizukan ...[JP]
Compendium of Rockman X Boss File A giant sea lion that charges his opponents. He is weak to the heat of flame attacks and has few attack patterns, but be careful to avoid them.[JP]
Mega Man X Legacy Collection Gallery A loose cannon infamous for causing trouble within Repliforce. Walrus was well on his way to being declared a Maverick when General instead put him to use as a soldier. He believes that being a soldier means smashing everything in sight, so he has welcomed the coup with open arms.
Mega Man X DiVE With the alias "Rumbler of the Far North", he is a member of the Repliforce Army of the Repliforce. He was convicted for his violent behavior and was deemed a Maverick. He was save by General before his execution and oined the Repliforce as a soldier, and was also the commander of the Snow Base. He is happy to see coup of the Repliforce, as he can finally week havoc![sic]


Behind the Scenes


Language Name Origin
Japanese Frost Kibatodos (フロスト・キバトドス) "Kibatodos" is a portmanteau of "kiba" () meaning fang, and "todo" (トド) meaning Steller sea lion.
English Frost Walrus Named after a walrus, due to his prominent tusks.


  1. MM25: Mega Man & Mega Man X Official Complete Works. 2013.
  2. Mega Man X DiVE. 2020.
  3. Game manual, Rockman X4. August 1997.
  4. (Archived) Capcom Japan official website, New Products, Rockman X4. 2000. (