"Chozo script translated."

This article's name is an unofficial translation from official Japanese media and may not represent the canonical English name, if one exists.
An alternate name from an official source may be required.

A Gadora (ガドラー Gadorā?) is a Bio-Barrier living on Zebes, but X Parasite mimics are also present on the BSL. They are easily recognizable by their single large eye that composes most of their bodies and are always found blocking entrances to nearby boss rooms. Their skin is seemingly covered with hardened scales and spikes. Samus can destroy them by firing three Missiles or one Super Missile at the creatures' soft, ocular organ when their eyelids open. They will sometimes defend themselves by covering their eye with a strong shield which they immediately launch as a wave of plasma; in other appearances, they shoot three consecutive spheres of plasma which home in on their target.

Scientists had seemingly kept at least one Gadora specimen inside the Biologic Space Laboratories research station, where it eventually died from infection as a result of the X Parasite outbreak. The X carrying its DNA transformed into several Gadora imitations throughout the station, adequately placed prior to boss rooms. These Gadora-X were heavily mutated from their original counterparts: red, pulsing lumps of flesh covered the surface of their bodies around their eyeball, with small tendrils located on their sides. Destroying a Gadora-X will always produce a Red X, replenishing a large amount of Samus's ammunition and energy.

In Metroid: Zero Mission and Metroid Fusion, these creatures can be destroyed with the Charge Beam as well; this is not possible with Super Metroid 's variant however.


Samus facing a Gadora aboard the Biologic Space Laboratories research station.

Metroid Prime and Metroid Fusion: Prima's Official Strategy Guide refers to these as "giant eyes". Metroid Fusion: The Official Nintendo Player's Guide calls it an "eyeball hatch".

Official dataEdit

Super Metroid Nintendo Player's GuideEdit

"Three Missiles (or one Super Missile) shot into the eye on the door will allow you to access Phantoon's chamber. This is the same technique you should use for entering the lair of each boss in the game."

Metroid Fusion manualEdit

HATCH-BLOCKING ENEMIES "Destroy hatch-blocking enemies with Missiles."


  • The Gadora has strong similarity to the final boss from Kid Icarus: Medusa, who was also a giant eye that fired energy waves as well as leaping serpents. Pit (the protagonist) could only harm Medusa by firing the Sacred Arrows into her eye.
  • EyeballBlocker is a creature in Metroid Prime 3: Corruption sharing many similarities with Gadora; it is possible that the former was modeled as an homage to the latter.
  • The fact that the Gadoras encountered on Zebes were always found guarding the Space Pirate leaders' chambers suggests that they are intentionally placed there by Pirates as a line of defense; this would also suggest that they are artificially cultivated life-forms and cannot be found naturally in the wild.
  • It is interesting to note that the Gadora-X in Fusion are X Parasites who have taken the role of guarding the rooms in which their superiors, the Core-Xs, reside in.
  • In Super Metroid, the Gadora's tileset appears on walls, floors and ceilings near the creature itself, suggesting that it makes a "home" out of its surroundings, or that the creature itself can spread and grow like a plant or fungus. The tileset will not disappear after Samus destroys the Gadora.
  • Worthy of note is the Gadora in Super Metroid's Tourian does not block Mother Brain's chamber, but instead a shaft that leads to the boss' room.
  • The Gadora seems capable of living indefinitely in Water, as the Gadora guarding Draygon in Super Metroid was seen submerged. Also, an X Parasite mimic or X-infected Gadora is found submerged in a pool of water in Sector 4 guarding the Serris mimic in Metroid Fusion.
  • The 'eye' security system, one of the many Pirate Alarm Systems seen on Chozodia in Zero Mission, shares similarities with the Gadora (as it is an eyeball on a wall that shoots projectiles quite similar to the latter's).
  • It is likely that the Gadora blocking Kraid in Super Metroid was responsible for the death of the "Deceased Soldier".
  • Its name appears to be a rough portmanteau of the words "guard" and "door", the function which it serves.
  • The Gadora guarding Kraid in Zero Mission is the weakest variant in the entire Metroid series, requiring only a single Missile to kill.
  • The Gadora are strictly found in 2D Metroid games and have never made an official 3D appearance, although the similar eyeballBlocker has.
  • The battle mechanism of the Slench being an eyeball only vulnerable when the ocular organ is shot is similar to the Gadora.