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Mega Man Zero 4

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Title Screen

Mega Man Zero 4

Also known as: Rockman Zero 4 (JP)
Developers: Inti Creates[1], Natsume[1]
Publisher: Capcom[1]
Platform: Game Boy Advance
Released in JP: April 21, 2005[1]
Released in US: October 4, 2005[1]
Released in EU: September 16, 2005[1]
Released in AU: September 14, 2005[1]

GraphicsIcon.png This game has unused graphics.
TextIcon.png This game has unused text.
RegionIcon.png This game has regional differences.

DevelopmentIcon.png This game has a development article
PrereleaseIcon.png This game has a prerelease article

Mega Man Zero 4 is the final game of the Zero subseries, and we finally get to see these "humans" that the X and Zero series have been talking about constantly. Oh, and Dr. Weil's back. He's still crazy.

Not as much collecting this time: there's only one Cyber-elf! However, there are a lot of head/body/leg chips to create, so get to enemy farming!


Read about development information and materials for this game.
Development Info
Read about prerelease information and/or media for this game.
Prerelease Info

Unused Graphics

Untranslated Icons

Exit out of these graphics.

Two unused buttons that were not translated for the American and European versions. They translate as "Back" and "Close".

Preliminary Final
So very cramped. Space is the place.

These buttons would have been used on the Elf Menu. They were likely removed because it was easier to just use B to navigate through the menu, and removing them gave room for two more lines of text. There was really no reason to keep them, so out they went.

(Source: Original TCRF research)

Unused Weapon

MMZ4 UnusedSprite 517.png

Animation group 517 in the Collection contains an odd looking sword. It is next to weapons and projectiles used with the Z-Knuckle. Given that it does not fit the art style of the rest of the game, it may have been taken from another project and used as a placeholder.

(Source: Jack Walker)

Zero 3 Leftovers

MMZ4 AnimGroup392.png

Located in animation group 392 is the charged shot animation used by Omega Zero.

(Source: Jack Walker)

Regional Differences

Prologue and Credits

The Prologue and Credits music tracks lack vocals in the international versions. The Japanese ending theme is used in all versions of Mega Man Zero Collection & Zero/ZX Legacy Collection, even in English.

There is however an unused track for Zero 4 in Zero Collection that could be the international version of the ending theme, but the first part where the singing was originally edited to remove vocals is very unfinished (nearly no instruments).

Sprite Changes

Blood Spray

When most enemies are destroyed with a non-Buster weapon in the Japanese version, a viscous crimson goop flies out of them. Like the other games in the series, this was removed from the international versions.

Boss Icon

Japan International
You worthless piece of scrap metal. NOTE: Weil is still not Wily.

As Dr. Vile's name was changed to Dr. Weil outside of Japan, the icon was changed from a V to a W.

Title Screen

Japan US Europe
Japan and Europe gets to keep the copyright notice. Unsurprisingly, the Japanese 4 wasn't used for this. This had to have been a running gag at Capcom by this point.

The European version continued the region specific logo used in the previous two games, although it looked jarring against the background art. The menu and difficulty selections are also positioned differently in each version.

Additionally after pressing the start button, the copyright notice on the bottom of the screen is still visible in the Japanese and European versions, but disappears in the US version, presumably due to the US logo being slightly bigger than the Japanese one and the aforementioned menu and difficulty selections (when a saved game if present and if any Mini Games are unlocked, in addition to having both Hard Mode and Ultimate Mode unlocked) being too low for the copyright to show. All of this was reverted in the US version of Mega Man Zero Collection however.

(Dragonsbrethren: Original TCRF research)