Bowser Jr.'s Fearsome Fleet

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Bowser Jr.'s Fearsome Fleet
Bowser Jr.'s Fearsome Fleet.png 
Area World 3 
How to unlock Get 28 Power Stars and defeat Bowser in Bowser's Lava Lair 
Boss(es) Megahammer 
Comet(s) Daredevil Comet
Green Comet 
Level(s) Bowser Jr.'s Mighty Megahammer
Megahammer's Daredevil Bash
Green Star 1
Green Star 2 
Stars Smg2 icon grandstar.pngSmg2 icon prankstercomet.pngSmg2 icon greencomet.pngSmg2 icon greencomet.png 
Galaxy Icon A small castle on top of a lava lake with jumping fireballs 
More Galaxies << >>

“Don't you know when to quit?! I'm gonna enjoy taking you out from the cozy confines of my robot cockpit!”
Bowser Jr., Super Mario Galaxy 2

Bowser Jr.'s Fearsome Fleet is the last galaxy of World 3 in Super Mario Galaxy 2. Mario fights Megahammer here, a new boss in the game operated by Bowser Jr. in a stage. Hammer Bros. can be found in the pre-boss area. Yoshi is also found in this galaxy; he is essential to defeat Megahammer.


NOTE: Unless otherwise noted, all names are unofficial.

Starting Planet[edit]

Mario on the Starting Planet.

There are a few Fizzlits in this metallic planet, and two Bullet Bill blasters in the walls. There are some yellow platforms that disappear after a set amount of time. At the end of the planet, there is a glass sphere the player must break by making Yoshi eat Bullet Bills and spit them back out towards them. There will be a yellow and white platform, which the player will ride through the Gunner Path.

Gunner Path[edit]

Mario on the Gunner Path.

This path is filled with Undergrunt Gunners and Mines. At the end of the path, the player will need to kill the Fizzlits and flip the switch to continue. The player will need to also use a Bullet Bill to break the glass sphere blocking the exit.

Bullet Bill Planet[edit]

Mario approaching the Bullet Bill Planet.

There is a Hammer Bro on this planet, along with several Bill Blasters. The player will have to break the glass dome covering the lever so they can progress.


SMG2 HammerBro.png
Mario on an Airship.

This path is much shorter than the Gunner Path. There are a few mines scattered along the path. During the player's travels, two Airships will appear, one with a ? Block and the other with a Hammer Bro and a Comet Medal. The player will need to shatter the glass sphere at the end of the path to progress.

Megahammer Planet[edit]

Mario and Yoshi approaching the Megahammer Planet.

This is the planet where the player battles Megahammer. It is shaped like a green and white ring with a few Sling Stars and some black and yellow segments that fall off after Megahammer smashes its hammers against the planet or shoots a Banzai Bill at it. There are also some Star Bits around the top of Megahammer. There is a huge Black Hole in the center of the planet, however, Megahammer is not affected by it.



Bowser Jr.'s Mighty Megahammer[edit]

Mario and Yoshi fighting Megahammer on its planet.

The player will land on the Starting Planet. They must find Yoshi and make him eat a Bullet Bill and destroy the glass sphere on the planet. This will unlock a new area on the planet. There are more Fizzlits and a lever. Yoshi must turn the lever to activate a moving platform in order to reach the next planet. While traveling the Gunner Path, there are several Undergrunt Gunners shooting Bullet Bills at the duo and many Mines. When the player and Yoshi reach the second planet two more Fizzlits and another lever and platform await. When the platform is activated, an Undergrunt Gunner, more Mines and another glass ball with Bill Blasters blocks the player's path. The player must break the ball to reach the Bullet Bill Planet. The lever for this planet is encased in a glass dome that Yoshi must shoot a Bullet Bill at to destroy. Then, when the player activates the platform, two airships - one with a Hammer Bro - will appear along with one more glass ball with Bill Blasters. When the ball is shattered, the Luma Shop Planet will be unlocked. When the Launch Star is used, the two will fly to the Megahammer Planet, where Bowser Jr. will appear and attach his Robot Cockpit to the body of Megahammer. In the ensuing battle, Yoshi must swallow Bullet Bills to destroy the three blue domes on Megahammer. This will cause Bowser Jr. to expose the windshield of his Robot Cockpit. Mario must hit the cockpit twice with Bullet Bills to bring the mechanical behemoth down. Mario and Yoshi must use a Sling Star to get the third Grand Star so they can enter World 4.

Planet Visited
Names in other languages
Language Name Meaning
Japanese 食べてかわして巨大ロボット
Tabete kawashite Kyodai robotto
Eat, Dodge and Mega Robot
Spanish ¡Mario vs. Martillator! Mario vs Megahammer!
French Un robot trop marteau A robot too crazy (marteau also means hammer)
German Bowser Jr.s Pressluftpolterer Bowser Jr.'s Megahammer

Megahammer's Daredevil Bash[edit]

Mario fighting Megahammer with one health.

The Daredevil Comet must be in orbit in order to select this mission. The player will start out on the Megahammer Planet. He will have to fight Megahammer with only one unit of health. The player will have to use Yoshi to defeat the hammering monster once again.

Planet Visited
Names in other languages
Language Name Meaning
Spanish ¡Muerte súbita! ¡Mario vs. Martillator! Sudden death! Mario vs Megahammer!
French Un robot trop marteau (une seule chance) A robot too crazy (only one chance) (marteau also means hammer)
German Risikokomet! Pressluftpolterer-Panik Daredevil Comet! Megahammer Panic

Green Star 1[edit]

Mario about to get the first green star.

The player will redo the Bowser Jr.'s Mighty Megahammer mission. The first Green Star is located just behind the rightmost Undergrunt Gunner while riding the platform on the Gunner Planet. The player must use Yoshi to grab the Bullet Bill and destroy the Gunner to be able to safely grab the star.

Planet Visited

Green Star 2[edit]

Luigi about to get the second green star.

The player will redo the Bowser Jr.'s Mighty Megahammer mission. The last Green Star is positioned on the Airship Fleet Path. The player must jump on to the second airship, the one with the Hammer Bro, and carefully manoeuvre on the front plank, and jump off it on to the Star.

Planet Visited


See here.

Names in other languages[edit]

Language Name Meaning
Japanese クッパJr.の戦艦の港
Kuppa Jr. no senkan no minato
Bowser Jr.'s Battleship Harbor
Spanish (NOA) Flota Flotante de Bowser Jr. Bowser Jr.'s Floating Fleet
Spanish (NOE) Flota Flotante de Bowsy Bowsy's Floating Fleet (Bowsy being Bowser Jr.'s Spanish name).
French (NOE) Base interstellaire de Bowser Jr. Bowser Jr.'s interstellar base
German Bowser Jrs. Angstarmada Bowser Jr.'s Fearsome Armada
Italian Flotta Navale di Bowser Jr. Bowser Jr.'s Naval Fleet
Chinese 庫巴Jr 軍港 bowser Jr's naval


  • This is the only Galaxy where Yoshi can be in the Grand Star victory pose.
  • In the Italian versions of Super Mario Galaxy and Super Mario Galaxy 2, Bowser Jr.'s Airship Armada and this galaxy share the same name.
  • The battle with Megahammer in this galaxy and the battle with Bowser Jr. in Bowser Jr.'s Airship Armada are similar in that each features the use of a Sling Star during the battle. Incidentally, these two battles are the only situations between the two games in which a Sling Star may be used in a battle with either Bowser or Bowser Jr. Besides, both battles need specific item and enemies to defeat Bowser Jr. .