Boss Gate Key, or just Boss Key, is a recurring object in the  . It is a special type of key that is needed to unlock Sonic the Hedgehog series Boss Gates, which grant access to the local levels' bosses.
A Boss Gate Key in
The first Boss Keys appeared on the Xbox 360/PlayStation 3 version of
under the name Sonic Unleashed Gaia Keys (. In this game, they are needed to unlock certain ガイア神殿の鍵 Gaia shinden no kagi , lit. "Key to the Gaia temple") ? Gaia Gates (called " Boss Gates" by Professor Pickle). Story-wise, they each grant access to their local Gaia Temple via their Boss Gates..
While there are seven Temples of Gaia in the world, only four Gaia Keys are available in the game. This is because the player automatically accesses the Gaia Temples in
Eggmanland, Mazuri and Chun-nan without a need for a Gaia Key.
Each Gaia Key is split into to halves: one
Sun Key and one Moon Key. Both these keys are needed to form one whole Gaia Key. To obtain both halves for a key, the player has to clear the main daytime Act (which holds the Sun Key) and nighttime Act (which holds the Moon Key) on one continent. This means, for example, to get the Gaia Key for  Spagonia's Boss Gate, the player must clear both the daytime and nighttime version of Rooftop Run Act 1. When playing through these Acts for the first time, the Gaia Key halves will serve as the Goals; after that, they will be replaced with Goal Rings.
It should be noted that different continents' key halves cannot be used to substitute others. This means, for example, that
Holoska's Sun Key cannot be used as a substitute for Spagonia's Sun Key if the player wants to form a whole Gaia Key.
Wii/ PlayStation 2 version of Sonic Unleashed, the Gaia Keys are replaced by the Planet Tablets.
A Boss Gate Key in
In the console/
PC version of , the Boss Keys are needed to open the Sonic Generations Boss Gates in the White Space. Each Boss Gate found in the game requires three Boss Gate Keys to be unlocked, making a total of nine Boss Gate Keys to be found.
After both Classic Sonic and Modern Sonic clear all the Acts in an Area of the White Space, three Boss Gate Keys will appear around that Area. However, these keys will be surrounded by unpassable shields that makes them unobtainable. In order to obtain them, the player has to clear one Stage's
Challenge Act in either Act 1 or Act 2 for each of the keys. Once a Challenge Act has been cleared, the shield will be lowered and the Boss Gate Key can be picked up.
In other media
Gregorios exposits on the Gaia Keys, from
. Sonic the Hedgehog #272
comic series and its spin-offs published by Sonic the Hedgehog Archie Comics, the Gaia Keys from appear, though they share some elements from the Sonic Unleashed Sun Tablets, Moon Tablets and Planet Tablets.
In this media, the Gaia Keys open up for the inner chambers of the
Gaia Temples. In turn, they have been entrusted to select families who keep their duty a secret. Hoping to resolve the Shattered World Crisis, the sage Gregorios revealed the existence of the Gaia Keys to the Freedom Fighters and provided them with the identities and locations of the keyholders.
↑ Sonic Team (9 December 2008).
. Sonic Unleashed PlayStation 3. Sega. Area/Level: Collection Room. " Prof. Pickle: Yes, to operate the Boss Gates, you'll need to assemble the Boss Key. The daytime and night stages should each hold a separate key. Those two can then be fused into a single key, and used at the gate." ↑
( Sonic Unleashed PlayStation 3) European instruction booklet, p. 21.
Main article | Gallery | Script | Credits ( Xbox 360/PlayStation 3, Wii/PlayStation 2) | Glitches | Re-releases ( Mobile)
Sonic ( Super Sonic, Sonic the Werehog) | Chip ( Gaia Colossus) | Tails | Amy | Dr. Eggman | Professor Pickle | Orbot | Dark Gaia ( Perfect Dark Gaia)
/ Town Stages Villages Apotos | Mazuri | Spagonia | Chun-nan | Holoska | Shamar | Empire City* | Adabat | Eggmanland
Action Stages /
Stages Windmill Isle | Savannah Citadel* | Rooftop Run | Dragon Road | Cool Edge | Arid Sands | Skyscraper Scamper* | Jungle Joyride | Eggmanland
Alexis | Anastasia | Eric | Gregorios | Hot Dog Vendor* | Ice Cream Vendor | Lambros | Lucas* | Milos* | Sandra
Aida* | Barbara | Ciccio | David | Denise | Dora | Elio* | Federica | Franco* | Gigi | Hot Dog Vendor* | Ippolita | Irma* | Josef | Lilli* | Lucia | Marcantonio* | Mauro | Natalia* | Otto | Professor Pickle | Professor Pickle's Assistant | Raimondo
Ana | Essie | Gwek | Hog Dog Vendor* | Kofi | Kwami | Kwod | Yawa | Yaya
Chun | Hot Dog Vendor* | Hualin | Jinlin* | Lin | Shuifon | Wang* | Yilin | Zonshen
Hot Dog Vendor* | Jari-Pekka | Jari-Thure | Marketa | Sarianna | Ursule
Ara | Dimah | Ehsan | Erhan | Hizir | Hot Dog Vendor* | Iman | Labib | Latif | Layla | Mufid | Musaid | Raniya | Sa'id | Sadiq | Safi | Samia | Sammar | Shadi | Utba | Yasmine
Boss* | Brenda* | Charles* | Def Big* | Elizabeth* | Hot Dog Vendor* | Li'l Kate* | Louie Montaine* | Robert*
Hot Dog Vendor* | Jamal | Kaeo | Nagi | Rudi | Teanchai
EF-DC1998* | EF-MD1991* | EF-XB2006* | Hot Dog Vendor*
Baker | Lah | Su* | Wentos* | Wu*
Aero-Cannon | Aero-Chaser | Egg Blizzard | Egg Burst | Egg Fighter | Egg Fighter: Knight ( Electric shield, Spring shield) | Egg Fighter: Shield ( Electric shield, Spring shield) | Egg Fighter: Sword* | Egg Flame | Egg Launcher (H) | Egg Launcher (H+V) | Egg Launcher (V) | Egg Shackle | Egg Shooter | Egg Typhoon | Gold Aero-Cannon | Interceptor | Little Fighter* | Mole Cannon | Spinner | Thunder Ball | Thunder Spinner
Dark Gaia's minions Big Mother | Cure Master* | Dark Bat | Dark Bat Sniper | Dark Eel* | Dark Fright | Dark Master** | Deep Nightmare | Evil Flower* | Fire Master | Fright Master | Killer Bee | Lightning Master | Little Rex | Nightmare | Power Master* | Red Fright | Red Killer Bee | Red Nightmare** | Red Deep Nightmare** | Red Rex | Red Titan** | Spike** | Thunder Bat | Titan
Egg Beetle | Egg Cauldron* | Egg Devil Ray | Egg Dragoon | Egg Lancer | Dark Gaia | Dark Gaia Phoenix | Dark Guardian | Dark Moray | Perfect Dark Gaia
Air Boost | Crouch | Foot Sweep* | Grind Step | Grinding | Homing Attack | Hop | Jump Dash | Light Speed Dash | Slide | Skydiving | Sonic Boost | Sonic Drift | Spin Jump | Stomp | Quick Step | Wall Jump
Dash | Double Jump | Grab | Guard | Unleashed Mode | Wall Shuffle
Boost | Drill Attack | Super Sonic Boost | Turbo Boost
attacks Donkey Kick Combo* | Double Axle Combo* | Double Kick Combo* | Feral Were-Hammer* | Knuckle Sandwich Combo* | Sho-Hog-Ken* | Unleashed Knuckle Sandwich* | Vertical Were-Hammer* | Were-Hammer* | Werewheel Rush*
attacks Earthshaker* | Egg Scrambler* | Feral Wild Whirl* | Rolling Kick Combo* | Sho-Claw-Ken* | Ultimate Wild Combo* | Unleashed Wild Combo* | Wereclap* | Wild Whirl* | Wild Whirl Were-Hammer*
attacks Aerial Claw Slash* | Aerial Claw Slash and Spin* | Aerial Piledriver* | Crescent Moon Strike* | Diving Bodypress* | Flying Double-Punch* | Flying Double-Punch Crush* | Hurricane Combo* | Shooting Star Combo* | Typhoon Combo*
attacks Comet Punch* | Missile Punch* | Spinning Needle Attack* | Tricky Tornado Uppercut* | Triple Wild Claw* | Were-Claw Charge* | Were-Cyclone* | Were-Rush* | Were-Tornado* | Wild Werewhip*
Beatdown** | Claw Charge | Crescent Moon Strike** | Earthshaker** | Wereclap** | Were-Hammer** | Were-Claw** | Were-Wallop** | Wild Claw** | Wild Whirl**
Level up items Air Boost Shoes* | Light Speed Dash Shoes* | Stomping Shoes* | Wall Jump Shoes*
Art Book* | Audio System | Balloon | Blue Tea* | Blue spring | Bobsled | Bookshelf* | Bomb | Buggy** | Buoy | Check Point | Chaos Emerald | Chaos Orb* | Container ( Explosive crate, Steel Container, Wooden Container) | Conveyor Belt | Crane Lift | Crank | Crystal Ball* | Dark Energy Key** | Dark Gaia Force | Dash Panel | Dash Rail | Dash Ring | Door | Edible item ( Apple, Banana, Canned Juice, Chai, Chili Dog, Donut, Sundae Supreme) | Fountain | Gaia Key* | Giant spear** | Goal Ring | Gift* | Gramophone* | Green Tea* | Grind Rail | Hanging vine | Horizontal Bar | Hourglass* | Icicle | Iron ball | Item Capsules** | Jump Selector | Key Stone* | Laser field | Lever | Lovely Ring* | Maiden Statue* | Miles Electric | Moon Tablet** | Movable box | Moving Crate | Old Necklace* | Planet Tablet** | Pick-Me-Up* | Pretty Bouquet* | Power Shield* | Rainbow Ring | Ramp | Record* | Red Tea* | Ring | Shield Charge* | Snowblower | Souvenir* | Spike Trap | Spikes | Springboard/Spring | Springpole | Sun and Moon Medals | Sun Tablet** | Super Claw* | Super Ring | Switch | Thorn Spring | Tornado-1 | Trap Spring | Turquoise Tea* | TV* | Videotape* | Violet Tea* | White Tea* | Wide spring | Yellow Tea* | Zip Line | 1UP
English voice actors
Jason Griffith ( | Sonic, Sonic the Werehog, Prof. Pickle's Assistant) Amy Palant ( | Tails) Lisa Ortiz ( | Amy) Anthony Salerno ( | Chip) Mike Pollock ( | Eggman, Zonshen) Christopher Collet ( | Orbot) Dan Green (
Ice Cream Vendor, Prof. Pickle)
Japanese voice actors
Jun'ichi Kanemaru ( | Sonic) Chikao Otsuka ( | Eggman) Chō ( | Prof. Pickle) Ryo Hirohashi ( | Tails) Taeko Kawata ( | Amy) Tomokazu Seki ( | Sonic the Werehog) Ryōko Shiraishi (
Planetary Pieces Endless Possibility | Dear My Friend
Auto Running | Boost Gauge | Boss Gate | Boost Gauge | Chao* | Chaos Energy Cannon | Chun-nan's Treasure | Collection Room* | Combo | Critical Attack | Dark Energy Force Field** | Don Fachio* | Doctor Eggman's chair | Earth | Eggman Fleet | Egg Dragoon | Egg Mobile | Entrance Stage* | Exorcisms | Experience Point | Freeze | Gaia Gate | Gaia Manuscripts | Gaia Temple | Gaia Temple guardian | Hallowmoon | Havok | Health Gauge | Hint Ring | Orb Result** | Real-Time Interaction | Ring Energy Gauge | Shield | Shield Gauge | Shop* ( Counter of Dreams 2, Eggshop, Flying Fish Beach Shop, Golden Trading Company, Josef's, Surfside Seagull Sundries, Traveling Salesman Wentos, Treeshade, Ursule's Trading Post, Wang's Emporium) | Shuttle loop | Sonic: Night of the Werehog | Sonic World Adventure (manga) | Spagonia University | SPD | Rank | Time of awakening | Tornado Defense* | Unleashed Gauge
"*" Exclusive to
Xbox 360/ PlayStation 3 version "**" Exclusive to Wii/ PlayStation 2 version.
Main article | Gallery | Script ( Console/PC, 3DS) | Beta elements | Staff ( Console/PC, 3DS) | Glitches
Wisps Modern Sonic ( Modern Super Sonic) | Classic Sonic ( Classic Super Sonic)
Dr. Eggman | Time Eater | Tails | Classic Tails | Amy | Knuckles | Shadow | Cream | Cheese | Silver | Blaze | Omochao | Team Chaotix ( Espio, Vector, Charmy)
Wisps Cyan** | Orange* | Pink* | Red**
Stages Green Hill | Chemical Plant* | Casino Night** | Sky Sanctuary* | Mushroom Hill** | Speed Highway* | Emerald Coast** | City Escape* | Radical Highway** | Seaside Hill* | Crisis City* | Water Palace** | Rooftop Run* | Planet Wisp* | Tropical Resort** | Casino Night*
battles Death Egg Robot* | Big Arm** | Perfect Chaos* | Biolizard** | Egg Dragoon* | Egg Emperor** | Time Eater
Rival battles Metal Sonic | Shadow the Hedgehog | Silver the Hedgehog
Aero-Cannon* | Butterdroid** | Buzz Bomber | Buzzer | Chopper | Cop Speeder* | Crabmeat | Crawl** | Dragonfly** | Flapper** | Egg Chaser* | Egg Diver** | Egg Fighter* | Egg Fighter: Sword* | Egg Launcher (H)* | Egg Launcher (H+V)* | Egg Launcher (V)* | Egg Pawn | Egg Pawn (spear) | Eggrobo* | Giant Chopper* | Gold Beetle** | Grabber* | Gun Beetle* | Gun Hunter | Iblis's Minions ( Iblis Biter, Iblis Taker, Iblis Worm)* | Kiki** | Klagen** | Madmole** | Mono Beetle | Moto Bug | Mushmeanie** | Newtron | Rhinotank** | Sandworm* | Spinner | Spiny* | Sprinkler* | Sweeper** | Thunder Spinner
Air Boost | Bound Jump* | Crouch | Cyan Laser** | Double Jump* | Drift* | Freestyle Tricks* | Grind Step | Grinding | Homing Attack | Hop | Jump Dash | Kick boost | Lightspeed Dash* | Mid-Air Dash* | Orange Rocket* | Pink Spikes* | Quick Step* | Red Burst** | Boost | Slide | Skydiving* | Spin Dash | Spin Jump | Stomp | Super Sonic Boost | Super Sonic Missile | Super Sonic Spinning | Wall Jump
Chaos Spear | Drill Attack* | Fire Beam* | Heart Effect* | Ice Wave* | Meteor Smash* | Ninja Arts: Camouflage* | Propeller Flying* | Psychic Knife | Restraint Trap | Ring Spark Field | Sun Burst | V. Maximum Overdrive Attack | Warping arm attack | Whirlwind*
Skills* Flame Shield | Aqua Shield | Thunder Shield | Twin Spin Attack | Invincible Start | Shield | Power Sneakers | Long Spin Dash | Treasure Scanner | Homing Attack | Hercules Muscles | Breath Holder | Boardmaster | Ring Time | Blast Off | Speed Up | Direct Jump | Power Stomp | Quick Slide | Acceleration | Smasher Bonus | Ring Energy Bonus | Boost Gauge Up | Serial Homing | Auto-Gauge | Gauge Rebooter | Trick Mastery | Endless Boost | Power Brake | Sure-Footed | Safety Net | Last Chance | 10-Second Rings | Athleticism | Time Break | Super Sonic
Challenge Acts* Doppelganger Race! | The Buzz Bombers' Revenge! | Knuckles: Horde of Enemies | Swingset Circus | High Speed Challenge | Look Out Below! | Tails: Way Past Fast | Jump Rush | 300% Boost Gauge Challenge | Tails: Toxic Skies | Which Switch is Which? | Aqua Shield Challenge | Invincibility Challenge | One Ring Challenge | Amy: Taking the Leap Together! | Grappling with Grabbers | Underwater Ring Machine | Eggrobo Rush | Aerial Paradise | Ring Time Challenge | Amy: Topsy Turvy | Knuckles: Buried Treasure | 200% Boost Gauge Challenge | Balloon Bonanza | High-Speed Hijinks (Modern) | Cream: Chao Hunt | Hot Pursuit (Classic) | High Speed Challenge 2 | Resisting Arrest | Overdrift | Hot Pursuit (Modern) | Drill Baby Drill | Espio: Master of Camouflage | Lord of the Board | Thunder Shield Challenge | Rouge: The Bombardier | Rite of Spring | Cream: Helping Hand | Dash Ring 1-2-3 (Modern) | Topsy-Turvy | High-Speed Hijinks 2 | Rescue the Animals! | Espio: Way of the Ninja | High-Speed Hijinks (Classic) | Underwater Challenge | Rouge: The Temptress | Trick Island | Surf, Sea, and Sand | Terror From the Deep | Goal Post Juggle | Vector: Through the Storm | Flame Shield Challenge | Ring Time Challenge 2 | Power Stomp Challenge | Switcheroo | Blaze: Piercing the Flames | Four-way Cannon Cavalcade | High-Rise Balloon Climb | Dash Ring 1-2-3 (Classic) | Charmy: Don't Bug Me! | One Ring Challenge 2 | Barrel Ring Bonus | Rooftop Rail Grind | Endless Boost | Vector: Pick Up the Beat | With Your Powers Combined | Goal Post Juggle 2 | Chase After Blaze | Rescue the Animals 2! | Cart Challenge | Charmy: High in the Sky | Action Master | Orange Rocket, Blast Off!
English voice actors
Roger Craig Smith ( | Sonic) Mike Pollock ( | Eggman) Kate Higgins ( | Tails) Travis Willingham ( | Knuckles) Cindy Robinson ( | Amy) Kirk Thornton ( | Shadow) Quinton Flynn ( | Silver) Laura Bailey ( | Omochao, Blaze) Karen Strassman ( | Rouge) Michelle Ruff ( | Cream) Keith Silverstein ( | Vector) Troy Baker ( | Espio) Colleen O'Shaughnessey (
Japanese voice actors
Junichi Kanemaru ( | Sonic) Chikao Ōtsuka ( | Eggman) Ryo Hirohashi ( | Tails (Modern)) Takuto Yoshinaga ( | Tails (Classic)) Nobutoshi Canna ( | Knuckles) Taeko Kawata ( | Amy) Koji Yusa ( | Shadow) Rumi Ochiai ( | Rouge) Daisuke Ono ( | Silver) Nao Takamori ( | Blaze) Sayaka Aoki ( | Cream) Kenta Miyake ( | Vector) Yuuki Masuda ( | Espio) Youko Teppozuka ( | Charmy) Etsuko Kozakura (
Air Bubble | Back 2 Back | Balloon | Big Balloon | Birthday | Blue Blur: Sonic Generations Original Soundtrack | Bomb | Bonus Bell* | Boost Gauge | Boss Gate | Boss Gate Key* | Bottomless pit | Bumper | Buoy | Cannon | Capsule | Cart | Chao in Space | Chaos Emerald | Cloud* | Collection Room | Color Power | Combo* | Container ( Case, Spike Block, Steel Container, Unbreakable Container, Wooden Container) | Conveyor Belt** | Corkscrew loop | Crusher | Dash Panel | Dash Rail | Dash Ring | Death Egg Robot* | Dimensional Bomb | Egg Dragoon* | Egg Gun | Egg Mobile | Egg Spear | Energy Core | Escape from the City* | Explosion Trap | Fan | Flipper | Four-way Cannon* | Gear Platform | Goal Ring | Gondola* | GUN Military Truck* | Hanging Bell* | Havok* | Health Gauge** | Heart Bombs* | Helicopter* | High-speed warp tube | Horizontal Bar | Information Pod* | Iron ball | Jump Panel (plate) | Jump Panel (ramp) | Kao | Laser field | Lair of the Time Eater | Medal | Mega Mack* | Meteorite | Miles Electric | Movable box | Mushroom** | Musical note* | Orca | Perfect Bonus | Pole Elevator | Prism** | Propeller | Propeller Spring | Pulley | Rainbow Ring | Rank | Red Star Ring* | Ring | Rocket | Route Signal* | Seesaw | Sega Genesis Controller* | Skateboard* | Skill Shop* | Slot machine | Snowboard | Spring | Spring Catapult | Spring Pole | Spike Trap | Spinning Top | Sonic Generations (manga) | Sonic Generations of Skate | Sphere | Spinning Platform | Spotlight | Star Post | Statue Room* | Stomping Shoes** | Switch | Time Attack | Time Bonus | Tornado-1 | Totem Pole | Trap Spring | Vengeance is Mine** | Wall Jump Block | Warp Point | White Space | Wide spring | Winding Tunnel | Wisp Capsule | Wisp Gauge** | You're My Hero | Zip Line
*Console/PC version only
** Nintendo 3DS version only