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The Junon Underwater Reactor is a location in Final Fantasy VII. It is a mako reactor built underwater off the coast of Junon and provides power for the city. It is a massive complex on the ocean floor accessible from a pathway in the center of Junon. The Underwater Reactor is also home to Shinra's submarine base.

Story[edit | edit source]

Underwater Reactor on the World Map.

A newly stable Cloud Strife and his party storm the reactor to grab a Huge Materia before Shinra can use it. They fight their way down to the submarine dock, but the Turks store the materia onto a submarine before the party can reach it. To catch it, the party steals a submarine and chases after them. If they destroy the Shinra submarine transporting the Huge Materia, the party can pick it up on the Bottom of the Sea.

Locations[edit | edit source]

Elevator[edit | edit source]

From Junon Path - Underwater Reactor Entrance.

Walkway[edit | edit source]

Overlooks the submarine dock.

Corridor[edit | edit source]

Has a save point.

Interior[edit | edit source]

Guarded by guards, but no random encounters.

Core[edit | edit source]

A crane removes the Huge Materia.

Submarine Dock[edit | edit source]

Submarines are here, as well as the Carry Armor boss battle. The back area appears as its own screen, and some items are found here.

Items[edit | edit source]

The location of the Huge Materia on the seafloor.


Quests[edit | edit source]

Red submarine[edit | edit source]

A dog blocks a doorway to the red submarine's dock and will only move if the player loses the submarine minigame (their sub will sink). In this case the party can return to the Junon Underwater Reactor and find the dog has moved. The door the dog was guarding leads to another submarine dock from where the player can get a red submarine.

Enemies[edit | edit source]

Junon - Outside Elevator, and 1st Corridor[edit | edit source]

For Outside Elevator: on Part 1, the random battles are available by pressing the alarm (after getting buggy). From Part 2 on, besides the alarm, the random battles also occur when the party getting close enough to a platoon of soldiers and they run away (after Cloud returns from Mideel).

For 1st Corridor: The random battles are available after Cloud returns from Mideel.

Junon - Elevator[edit | edit source]

Junon - 1st Corridor[edit | edit source]

Junon Path - Submarine Dock[edit | edit source]

Only if the player fails the mission of Underwater Huge Materia.

Junon Path - 2nd and 3rd Corridors[edit | edit source]

Underwater Tunnel battle background.

Underwater Tunnel (Both screens)[edit | edit source]

Underwater Reactor - Walkway, and Corridor (save point)[edit | edit source]

Underwater Reactor - Interior[edit | edit source]

  • Battle #1: Submarine Crew (boss) [may battle together with Battle #2 as Ambush battle]
  • Battle #2: Submarine Crew x2 (boss) [may battle together with Battle #1 as Ambush battle]
  • Battle #3: Underwater MP x2 (boss)

Reactor battle background.

Underwater Reactor - Core[edit | edit source]

Underwater Reactor - Submarine Dock (1st Screen)[edit | edit source]

Underwater Reactor - Submarine Dock (2nd Screen)[edit | edit source]

Underwater Reactor - Inside Submarine (Gray)[edit | edit source]

Underwater Reactor - Submarine Bridge (Gray)[edit | edit source]

Underwater Reactor - Inside Submarine (Red)[edit | edit source]

Only if the player fails the mission of Underwater Huge Materia.

Underwater Reactor - Submarine Bridge (Red)[edit | edit source]

Only if the player fails the mission of Underwater Huge Materia.

Musical themes[edit | edit source]

"Hurry!" (急げ!, Isoge!?) plays in the upper levels of the reactor, but after descending the elevator into the water tunnel, "In Search of the Man in Black" (黒マントの男を追え, Kuro Manto no Otoko o Oe?) plays. After taking one more elevator down and reaching the reactor proper, "Mako Reactor" (魔晄炉, Makō Ro?) plays. Once the Huge Materia is discovered, "Hurry!" plays once again, and continues until the party leaves the reactor.

Other appearances[edit | edit source]

Final Fantasy Record Keeper[edit | edit source]

FFRK Underwater Reactor FFVII.png
Castle Cornelia PS.gifThis section about a location in Final Fantasy Record Keeper is empty or needs to be expanded. You can help the Final Fantasy Wiki by expanding it.


Gallery[edit | edit source]

Underwater reactor elevator.png
Underwater Reactor Tunnel.jpg
Underwater reactor interior.png
Underwater Reactor.jpg
Red Submarine Docked.jpg
Underwater reactor submarine dock.png
Underwater reactor red submarine.png
Underwater reactor submarine.png
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