Bowser Jr.'s Boom Bunker is a galaxy and the final galaxy of World 5 in the game Super Mario Galaxy 2 starring Bowser Jr. as the boss for the final time in the game. It has a darker appearance compared to its predecessors. Enemies found here inclue Fizzlits, Bullet Bills, Boomerang Bros., and Dry Bones. Mario can only visit this galaxy once he grabs 55 Power Stars.
Missions
Bowser Jr.'s Boomsday Machine
Mario must make his way to the centre of the Galaxy, where Bowser Jr. awaits in his Boomsday Machine.
Prankster Comets
Boomsday Machine Daredevil Run
Can Mario complete Bowser Jr.'s Boomsday Machine without taking damage?
Green Stars
Green Star 1
Climb on one of the flagpoles that appear on the second planet.
Green Star 2
Aim to the west of the Spinning Platforms Planet.
Planets
Starting Planet (Megahammer's Junkyard)
A destroyed Megahammer appears here.
Boomerang Bro fort planet
Beat the Boomerang Bros that lair here to find the Launch Star.
Cannon Planet
Use the Cannon to make your way forward. This planet's equator is straddled with an electric barrier.
Spinning Platforms Planet
Mario must make his way to the top to find the Launch Star, which leads him to the boss area.
Boss Planet
Bowser Jr. awaits... in his Boomsday Machine tank!
Dark Matter Area
Dark Matter lurk here, and their patch covers the entire planet, save for a few landmasses. A lone bipedal Koopa Troopa appears here, right after the _target, though his shell is too large to carry.
Trivia
- This is the only boss galaxy whose background lacks an orbiting blue planet in the background in Super Mario Galaxy 2. This is similar to Bowser Jr.'s Lava Reactor in the first game in the franchise.
- The daredevil run in this galaxy is one of the two mario galaxy stages in the game to contain the dark matter obstical. (the other one being Bowser's dark matter plant.
- This is the first, and currently the only, galaxy to feature a normal Koopa Troopa walking on two legs. Most Koopa Troopas in the Super Mario Galaxy games walk on all fours.
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| Characters | Protagonists | Mario • Luigi • Yoshi • Co-Star Luma |
| Non-playable | Baby Luma • Bill Board • Black Jibberjay • Bob-omb Buddies • Bowser • Bowser Jr. • Co-Star Luma • Coach • Cosmic Spirit • Fluzzard • Gearmos (Gold · Silver) • Honeybees • Hungry Lumas (Coin Lumas) • Jibberjays • Lubba • Lumalee • Lumas • Penguin • Penguru • Piantas • Princess Peach • Queen Bee • Rosalina • Seagull • Star Bunnies • The Chimp • Toad Brigade • Toads • Whittles | |
| Antagonists | Bowser • Bowser Jr. | |
| Enemies | Enemies | Amp • Astro Goomba • Banzai Bill • Bat • Big Amp • Big Gringill • Big Wiggler • Blooper • Bob-omb • Bomb Boo • Bomp • Boo • Boomerang Bro • Bullet Bill • Cheep Cheep • Chomp • Chomp Pup • Choppah • Clam • Cluckboom • Cosmic Clone • Crabber • Digga • Dry Bones • Elite Octoomba • Fizzlit • Flaptack • Flipbug • Flimp • Fuzzy • Gargantua Koopa Troopa • Gold Chomp • Golden Gummit • Goomba • Grand Goomba • Gringill • Ground Urchin • Gummit • Hammer Bro • Huge Paragoomba • Jack O'Goomba • Jammyfish • Kleptoad • Koopa Troopa • Lakitu • Li'l Brr • Li'l Cinder • Magikoopa • Magmaargh • Magmaw • Mandibug • Mattermouth • Mega Boo • Mega Thwomp • Micro Mecha-Bowser • Micro Goomba • Mikey Mine • Octoboo • Octoguy • Octoomba • Octopus • Paragoomba • Pinhead • Piranha Plant • Piranhacus Giganticus • Podoboo • Pokey Head • Preying Mantas • Prickly Piranha Plant • Puffer Fish • Pupdozer • Rhomp • Ring Beamer • Sentry Beam • Silver Chomp • Skeeter • Slurple • Smeech • Snoodle • Spiky Gummit • Spiky Piranha Plant • Spiky Topman • Spiny • Spiny Hermit • Spiky Stretch Plant • Spiny Egg • Spoing • Sprangler • Spring Robot • Spring Topman • Starbag • Swaphopper • Thwomp • Topman • Topmini • Tox Box • Twirlip • Undergrunt • Undergrunt Gunner • Urchin • Venus Flower Trap • Whimp • Whomp • Wiggler |
| Obstacles | Obstacles | Banzai Bill Cannon • Bars • Bill Blaster • Black Hole • Bob-omb Dispenser • Bowser Statue • Boulder • Buzz Saw • Cactus • Chomp box • Current • Dark matter • Electric rail • Electricity Shooter • Fire Arm • Fire Shooter • Gravity field • Lava • Lava Plume • Ledge Hammer • Meteor • Millstone • Mud • Poison Swamp • Prickly Plant • Quicksand • Ring of Fire • Space Mine • Spike Block • Water Shooter • Wind |
| Bosses | Bosses | Peewee Piranha • Giga Lakitu • Digga-Leg • Gobblegut • Mandibug Stack • Bugaboom • Rollodillo • Sorbetti • Megahammer • Glamdozer • Squizzard • Prince Pikante • Boomsday Machine • Whomp King • Fiery Gobblegut • Giant Bowser • Dino Piranha • King Kaliente • Major Burrows • Bouldergeist • Fiery Dino Piranha |
| Galaxies | World 1 | Sky Station Galaxy • Yoshi Star Galaxy • Spin-Dig Galaxy • Fluffy Bluff Galaxy • Flip-Swap Galaxy • Rightside Down Galaxy • Bowser Jr.'s Fiery Flotilla |
| World 2 | Puzzle Plank Galaxy • Hightail Falls Galaxy • Boulder Bowl Galaxy • Cosmic Cove Galaxy • Wild Glide Galaxy • Honeybloom Galaxy • Bowser's Lava Lair | |
| World 3 | Tall Trunk Galaxy • Cloudy Court Galaxy • Haunty Halls Galaxy • Freezy Flake Galaxy • Rolling Masterpiece Galaxy • Beat Block Galaxy • Bowser Jr.'s Fearsome Fleet | |
| World 4 | Supermassive Galaxy • Flipsville Galaxy • Starshine Beach Galaxy • Chompworks Galaxy • Sweet Mystery Galaxy • Honeyhop Galaxy • Bowser's Gravity Gauntlet | |
| World 5 | Space Storm Galaxy • Slipsand Galaxy • Shiverburn Galaxy • Boo Moon Galaxy • Upside Dizzy Galaxy • Fleet Glide Galaxy • Bowser Jr.'s Boom Bunker | |
| World 6 | Melty Monster Galaxy • Clockwork Ruins Galaxy • Throwback Galaxy • Battle Belt Galaxy • Flash Black Galaxy • Slimy Spring Galaxy • Bowser's Galaxy Generator | |
| World S | Mario Squared Galaxy • Rolling Coaster Galaxy • Twisty Trials Galaxy • Stone Cyclone Galaxy • Boss Blitz Galaxy • Flip-Out Galaxy • Grandmaster Galaxy | |
| Items | Items | ? Coin • 1-Up Mushroom • Bee Mushroom • Berries • Blimp Fruit • Boo Mushroom • Brick Block • Bronze Star • Bubble • Bulb Berry • Clock • Cloud Flower • Coin • Comet Medal • Dash Pepper • Fire Flower • Grand Star • Green Power Star • Key • Life Mushroom • Music Note • Power Star • Purple Coin • Rainbow Star • Rock Mushroom • Silver Star • Spin Drill • Spring Mushroom • Star Bit • Star Chip • Star Crystal • Watermelon • Yoshi Egg |
| Objects | Objects | ? Block • Airship • Arrow Sign • Assembly Block • Balloon • Banandelion • Bar • Beacon • Beat Block • Big Block • Blue Switch • Brick Block • Bubble • Bubbler • Cage • Cannon • Chance Cube • Checkpoint Flag • Cloud • Coconut • Crate • Divot • Empty Block • Flip-Out Wall • Flip-Swap Platform • Flipswitch Panel • Floaty Fluff • Flower Grapple • Flower (platform) • Flowers • Flying ? Block • Galactic Tornado • Gate • Glass case • Golden peg • Grate • Gravity switch • Green Shell • Ground-Pound Switch • Honeycomb wall • Ice block • Ice Meteor • Item Crystal • Key Door • Launch Star • Leaf raft • Lever Switch • Lift • Lucky Cube • Mega ? Block • Meteorite • Nail • Picture block • Pink block • Pipe • Pole • Portal • Pull Star • Purple Coin Ball • Ramp • Ring • Rock • Rubbery Bulb • Sand Bird • Shrinking platform • Sign • Sling Star • Snake Block • Snow sculpture • Snowball • Springboard • Sproutle Vine • Star Ball • Star Barrier • Star Piece Cluster Rock • Starship Mario • Starshroom • Stone circle • Stone Wheel • Stump • Swing • Teeter-totter moon • Teleporter • Tip Network • Torch • Treasure chest • Tree • Underwater ring • Warp Pad • Water Ball • Water spout • Watermelon |
| Moves | Moves | Backward somersault • Crawl • Crouch • Dash • Double jump • Double kick • Eat • Flutter jump • Ground pound • Head Shake • Jump • Kick • Long jump • Side somersault • Skate • Slide • Spin jump • Star Spin • Stomp • Sweep kick • Swim • Triple jump • Wall jump |
| Missions | Sky Station Galaxy | Peewee Piranha's Temper Tantrum • Storming the Sky Fleet • Peewee Piranha's Speed Run* |
| Yoshi Star Galaxy | Saddle Up with Yoshi • Spiny Control • Spiny Rainbow Romp* | |
| Spin-Dig Galaxy | Digga-Leg's Planet • Silver Stars Down Deep • Digga-Leg's Daredevil Run* | |
| Fluffy Bluff Galaxy | Search for the Toad Brigade Captain • The Chimp's Stomp Challenge** • Every Planet Has Its Price | |
| Rightside Down Galaxy | Breaking the Laws of Gravity • The Great Crate Incinerator | |
| Bowser Jr.'s Fiery Flotilla | Gobblegut's Aching Belly • Fiery Flotilla Speed Run* | |
| Flip-Swap Galaxy | Think Before You Shake • Purple Coin Flip 'n' Sprint* | |
| Puzzle Plank Galaxy | The Puzzling Picture Block • Bugaboom's Back • Purple Coin Shadow Vault* | |
| Hightail Falls Galaxy | Hot-Stepping Dash Pepper • Hightail Falls Speed Run* • Silver Stars in Hightail Falls | |
| Boulder Bowl Galaxy | Rock and Rollodillo • C'mere, Goomba** • Rolling Crabber Romp* | |
| Cosmic Cove Galaxy | Twin Falls Hideaway • Exploring the Cosmic Cavern • Catch That Star Bunny | |
| Wild Glide Galaxy | Fluzzard's First Flight • Jungle Fluzzard Race** | |
| Bowser's Lava Lair | Bowser's Big Lava Power Party • Lava Lair Speed Run* | |
| Honeybloom Galaxy | *Bumble Beginnings • The Secret Wall Jump | |
| Tall Trunk Galaxy | The Flotacious Blimp Fruit • Tall Trunk's Big Slide • Tall Trunk's Purple Coin Slide* | |
| Cloudy Court Galaxy | Head in the Clouds • The Shadow Lining* • Silver Stars in the Purple Pond | |
| Haunty Halls Galaxy | A Glimmer of Bulb Berry • Sneaking Down the Creepy Corridor • Spooky Cosmic Clone Chase* | |
| Freezy Flake Galaxy | Bowser on Ice • Sorbetti's Chilly Reception • The Chimp's Skating Challenge | |
| Rolling Masterpiece Galaxy | Silver Chomp Grudge Match • Masterpiece Speed Run* | |
| Bowser Jr.'s Fearsome Fleet | Bowser Jr.'s Mighty Megahammer • Megahammer's Daredevil Bash* | |
| Beat Block Galaxy | Step to the Beep • Silver Stars in Double Time* | |
| Supermassive Galaxy | Huge Trouble with Big Wigglers • Big Wigglers Speed Run* • In Full Bloom | |
| Flipsville Galaxy | Flip-Flopping in Flipsville • Flipsville's New Digs • Purple Coin Spin Speed Run* | |
| Honeyhop Galaxy | The Sweetest Silver Stars • The Chimp's Score Challenge** | |
| Starshine Beach Galaxy | Surf, Sand, and Silver Stars • Climbing the Cloudy Tower • Purple Coin Beach Dash* | |
| Chompworks Galaxy | Where the Chomps Are Made of Gold • Spring into the Chompworks • Cosmic Clones in the Chompworks* | |
| Bowser's Gravity Gauntlet | Breaking into Bowser's Castle • Gravity Star Speed Run* | |
| Sweet Mystery Galaxy | Bulb Berry's Mysterious Glow • Bulb Berry's Purple Coin Glow* | |
| Space Storm Galaxy | Follow Me, Bob-omb • To the Top of Topman's Tower • C'mere, Topman** | |
| Slipsand Galaxy | Squizzard's Sandy Sinkhole • Sailing the Sandy Seas • Squizzard's Daredevil Run* | |
| Shiverburn Galaxy | Prince Pikante's Peppery Mood • Octo-Army Icy Rainbow Romp* • The Chimp's Ultimate Skating Challenge | |
| Boo Moon Galaxy | Silver Stars Pop-Up • Haunting the Howling Tower • The Star in the Sinking Swamp | |
| Upside Dizzy Galaxy | A Walk on the Weird Side • Burning Upside Dizzy | |
| Bowser Jr.'s Boom Bunker | Bowser Jr.'s Boomsday Machine • Boomsday Machine Daredevil Run* | |
| Fleet Glide Galaxy | Fluzzard's Wild Battlefield Glide • Fastest Feathers in the Galaxy** | |
| Melty Monster Galaxy | The Magnificent Magma Sea • A Stroll Down Rolling Lane • The Chimp's Bowling Challenge | |
| Clockwork Ruins Galaxy | Time for Adventure • The Adventure of the Purple Coins* • The Ledge Hammer Trap | |
| Slimy Spring Galaxy | The Deep Shell Well • The Chimp's Coin Challenge** | |
| Throwback Galaxy | Return of the Whomp King • Silver Stars in the Whomp Fortress • Whomp Silver Star Speed Run* | |
| Battle Belt Galaxy | Mini-Planet Mega-Run • Mini-Planet Daredevil Run* • Snacktime for Gobblegut | |
| Bowser's Galaxy Generator | Bowser's Fortified Fortress • Bowser's Big Bad Speed Run* | |
| Flash Black Galaxy | Jumping Around in the Dark • Dark Octo-Army Romp* | |
| Mario Squared Galaxy | Make Mario a Star • Luigi's Purple Coin Chaos* | |
| Rolling Coaster Galaxy | The Rainbow Road Roll • Purple Coins on the Rainbow Road* | |
| Twisty Trials Galaxy | Spinning and Spinning and Spinning • Turning Turning Double Time* | |
| Stone Cyclone Galaxy | Silver Stars on the Cyclone • Tox Box Speed Run* | |
| Boss Blitz Galaxy | Throwback Throwdown • Throwback Throwdown Speed Run* | |
| Grandmaster Galaxy | The Ultimate Test • The Perfect Run* | |
| Flip-Out Galaxy | Wicked Wall Jumps • Cosmic Clone Wall Jumpers* | |
| Miscellaneous | Minigames | Crate Burning • Fluzzard Gliding • Star Ball Rolling |
| Other | Star Pointer• Mario Mandate | |
| Missions marked with an asterisk (*) are exclusively available while a Prankster Comet is in orbit. Missions marked with two asterisks (**) are only available when receiving a letter from Mailtoad. | ||