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Sonic News Network
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For the Zone in Sonic Mania, see Flying Battery Zone (Sonic Mania).

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Sonic & Knuckles
Flying Battery Zone

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Go flying on Robotnik's warship. Watch where you step - sneaky traps are everywhere!

— United States instruction booklet, Sonic & Knuckles[1]

Flying Battery Zone (フライングバッテリー ゾーン[2] Furaingubatterī Zōn?) is the second Zone of Sonic & Knuckles (and the eighth of Sonic the Hedgehog 3 & Knuckles).


This Zone takes place on Dr. Robotnik's gigantic metal blimp. The blimp is powered by rotating drills and machines that send out worm-like bridges.


Sonic's story

After damaging Dr. Robotnik's Egg Mobile in Mushroom Hill Zone, he will try to fly away with the Flying Battery. After chasing him for a while, Sonic and Tails come across the Flying Battery warship, which they board as it escapes. They then climb up onto an actual foothold and the Zone begins. Later, after defeating Eggman, the ship begins to explode, prompting Sonic and Tails to break through a door and plummet down into Sandopolis Zone.

Knuckles' story


In Flying Battery Zone are flame jets that can act as springs if the player stands on one for long enough, which will cause the pressure to send the character upwards; sometimes they even act as hidden switches.

Despite the Zone being one of Dr. Robotnik's contraptions, there are some Giant Rings in the level, most of which are accessed by pushing certain groups of spikes. These can be identified by a vertical pipe leading down from the floor where the spikes are, which the player can fall through.


Act 1

Act 2

Act 2 basically starts out the same as Act 1, but with slightly different music.



Main article: Gapsule

The Gapsule is a robot that resembles a normal Capsule. The player cannot directly damage the Gapsule and can only do so by having the Gapsule attack itself with its two large spiky arms. The player needs to stand on the switch on top of its head and wait for it to rear back and swing one of its maces at them, indicated by when its eyes flash to indicate it has locked-on to them. They then need to get off the Gapsule and jump to the side in order for the machine to damage itself in the process when it brings the mace down on the plunger. After six hits, it will be destroyed.

Barrier Eggman

Main article: Barrier Eggman

Barrier Eggman is very similar to the boss of Wing Fortress Zone from Sonic the Hedgehog 2. Dr. Robotnik appears behind a barrier on one side, and a barrier on the other is activated once the player enters the arena. He'll control a laser cannon that moves along the roof, that attempts to home in on the player. Every time it attempts to do so, the barriers will close in one space. There is no special technique required for this "boss", as it eventually self-destructs after a few tries. Upon this, player needs to escape part of the Flying Battery and avoid being crushed, eventually encountering the second boss.

Hang Mobile

Main article: Hang Mobile

Dr. Robotnik appears in a lanky-armed machine that has spikes covering both arms. He'll spend time swinging around, and eventually hang below the floor, inching about with the arms. If the player jumps over the width of the machine, Dr. Robotnik shoots a blast of fire from the top. The trick is to hit the glass area -the vulnerable part- when he takes time to swing up and down around the floor. After eight hits, the scientist will speed away.

In other media

Archie Comics

Main article: Flying Battery

In the Sonic the Hedgehog comic book series and its spin offs, the Flying Battery is a warship once used by Dr. Eggman. Its past is virtually identical to its game counterpart's. Current, its wreckage can be found on Angel Island.


Flying Battery, featured on the stage select in Sonic the Hedgehog 3.

  • According to the level select in Sonic the Hedgehog 3's secret Sound Test mode, this was supposed to be the fifth Zone in the game. At the end of the Zone, Sonic was supposed to break the door of the battery blimp and use it as a snowboard in IceCap Zone (Tails and Knuckles would not have this scene, since they can fly and glide, respectively). The Sound Test option in both Sonic & Knuckles and Sonic the Hedgehog 3 places Flying Battery's music after Sounds #7 and #8 (Carnival Night's BGM). There's even an unused icon of Flying Battery leftover in Sonic the Hedgehog 3 that was supposed to appear between Carnival Night Zone and Ice Cap Zone. [
    • Interestingly enough, while Sonic was meant to break out of the Flying Battery and use a part of it as a snowboard, it was later on reused in Sonic Adventure 2, where in the intro Sonic escapes from a G.U.N. helicopter and uses the door as a skateboard.
  • Dr. Robotnik appears in the second phase of the boss battle for both Sonic and Knuckles, despite Knuckles' boss battles usually being against Eggrobo. The sprites for the pilot character were different for this boss battle than for any of the others, facing towards the screen instead of side-on. Since the game features no sprites for Eggrobo in this new position (for unknown reasons), Robotnik appears instead.
  • The Flying Battery may have attacked Sonic and Tails in Angel Island Zone before the boss. While it is identified in the manual as the "Flying Battery blimp", the size of the green underside is much smaller than the orange airship seen later.
  • This is the only Zone where the playable characters are standing still at the start of the Zone.
  • Both a classic mix and a remix of Act 1's music is on the Nintendo 3DS version of Sonic Generations and Mario & Sonic at the London 2012 Olympic Games, respectfully. A remix of Act 1's music also appears in Mario & Sonic at the Sochi 2014 Olympic Winter Games and Mario & Sonic at the Rio 2016 Olympic Games.
  • In Sonic the Hedgehog 3, and the betas for Sonic 3: Limited Edition, there was a bug in Act 1's music, that caused the echo part of the music fall behind the song more each time the song looped.
  • The music for Act 2 was remixed as the boss fight music for Aquatic Relix Zone in Sonic the Hedgehog Pocket Adventure.
  • Tee Lopes (the composer for Sonic Mania) mentioned during a YouTube Gaming live stream that he used to absolutely hate Flying Battery Zone.


Name Artist(s) Length Music Track
Flying Battery Zone (Act 1) Tatsuyuki Maeda, Tomonori Sawada, Sachio Ogawa, Masayuki Nagao, Masanori Hikichi 1:29
Flying Battery Zone (Act 2) Tatsuyuki Maeda, Tomonori Sawada, Sachio Ogawa, Masayuki Nagao, Masanori Hikichi 1:29

S&K Collection

Name Artist(s) Length Music Track
Flying Battery act 1 (FM Synthesizer) 1:27
Flying Battery act 2 (FM Synthesizer) 1:25
Flying Battery act 1 (General MIDI) 1:25
Flying Battery act 2 (General MIDI) 1:24


  1. Sonic & Knuckles (Sega Mega Drive) United States instruction booklet, pg. 12.
  2. Sonic & Knuckles (Sega Mega Drive) Japanese instruction booklet, pg. 34.

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