Bowser Jr.'s Fearsome Fleet
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.. Hammer Bros. can be found in the pre-boss area. Yoshi is also found in this galaxy and is essential to defeat Megahammer.
NOTE: Unless otherwise noted, all names are unofficial.
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.
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
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.
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.
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.
Green Star 1
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.
Green Star 2
The player will redo the Bowser Jr.'s Mighty Megahammer mission. The last Green Star is positioned on the Airships. The player must jump on to the second airship, the one with the Hammer Bro and the Comet Medal, and carefully maneuver on the front plank, and jump off it on to the Star.
Names in other languages