Researcher

The researchers^[1] are characters that appear in the Sonic the Hedgehog series. There are scientists who resided on the Space Colony ARK over fifty years ago.

Appearance

The researchers wear white shirts and trousers with an orange waistcoats with black stripes on the shoulders. They also wear white helmets with visors. They also wear white gloves and shoes.

Game appearances

Sonic Adventure 2

In Sonic Adventure 2 and its remake Sonic Adventure 2: Battle, the researchers were indirectly mentioned. Here, it is mentioned that they worked alongside Professor Gerald Robotnik on Project Shadow onboard the Space Colony ARK. When the ARK was shut down and had its protects ceased, GUN executed everyone on the ARK, including the researchers.^[2]^[3]

Shadow the Hedgehog

In Shadow the Hedgehog, the researchers appear in The Doom as the objective for the Hero mission. Ten injured researchers are found throughout the stage and Shadow must use Heal Units (or the Heal Cannon if unlocked and found) to revive them.

Powers and abilities

Being involved in the research projects conducted by Gerald Robotnik, it stands to reason that the researchers possess a great deal of knowledge in the fields of science.

Trivia

The researchers in Shadow the Hedgehog are actually retextured models of GUN Soldiers.

References

↑ Sonic Team (18 November 2005). Shadow the Hedgehog. PlayStation 2. Sega. Area/level: The Doom. "Maria Robotnik: The researcher has been saved as well! Let's keep going!"
↑ Enterbrain (10 October 2001). "５０年前の真実". ソニックアドベンチャー2パーフェクトガイド (in Japanese). ISBN 978-4757706255. Retrieved 8 August 2017.
↑ Sonic Team (11 February 2002). Sonic Adventure 2: Battle. GameCube. Sega. Area/Level: Last Story. "Rouge/Gerald: I don't quite know what happened, or what went wrong. Was it a mistake to create the Ultimate Life Form? I thought it would be something that would benefit mankind... But then the military guards landed on the Colony that day. They were sent to destroy the research project that I had been working on. My colleagues at the research facility, my granddaughter Maria, I hope you are all safe."

Sonic Adventure 2

Playable characters	Hero	Sonic (Super Sonic) \| Tails \| Knuckles
	Dark	Shadow (Super Shadow) \| Rouge \| Eggman
	Misc.	Amy* \| Big^ \| Chao Walker \| Chaos* \| Dark Chao Walker* \| Metal Sonic* \| Tikal*
Non-playable characters		Chao (Chao Principal, Chaolin, Chaoko, Chaos Chao, Chaosky, Dark Chao, Dinner, Happy, Hero Chao, Wacky) \| Gerald \| Maria \| President \| Scorpion Troop \| Secretary \| Sigma-Alpha 2 \| Spider Troop \| Researcher \| Animals (Bat, Bear, Boar, Cheetah, Condor, Dragon, Gorilla, Half Fish, Parrot, Peacock, Penguin, Phoenix, Rabbit, Raccoon, Seal, Sea Otter, Sheep, Skeleton Dog, Skunk, Tiger, Unicorn)
Stages	Hero	City Escape \| Wild Canyon \| Prison Lane \| Metal Harbor \| Green Forest \| Pumpkin Hill \| Mission Street \| Aquatic Mine \| Route 101 \| Hidden Base \| Pyramid Cave \| Death Chamber \| Eternal Engine \| Meteor Herd \| Crazy Gadget \| Final Rush
	Dark	Iron Gate \| Dry Lagoon \| Sand Ocean \| Radical Highway \| Egg Quarters \| Lost Colony \| Weapons Bed \| Security Hall \| White Jungle \| Route 280 \| Sky Rail \| Mad Space \| Cosmic Wall \| Final Chase
	Misc.	Cannon's Core \| Green Hill
	2P Stages	Downtown Race \| Grind Race \| Planet Quest \| Pool Quest \| Deck Race \| Pyramid Race
Enemies	G.U.N.	Blue Eagle \| Bomb Beetle \| Bomb Wing \| Gold Beetle \| Gun Hawk \| Gun Beetle \| Gun Hawk \| Gun Hunter \| Gun Wing \| Hornet-3 \| Hornet-6 \| Hornet-9 \| Laser Hawk \| Laser Hornet \| Laser Hunter \| Mono Beetle \| Phoenix \| Rhino Cannon \| Rhino Jet \| Rhino Metal \| Rhino Spike \| Shield Hunter \| Sky Hawk \| Spark Beetle \| Spring Beetle
	Badniks	Buzz Bomber \| Chopper \| E-1000 \| Gola \| Unidus \| Kiki
	Misc.	Artificial Chaos (Artificial Chaos P-1, Artificial Chaos P-100, Cell, Float Type, Guard Type) \| Boo \| Boom Boo
Bosses		B-3x Hot Shot \| Biolizard \| Dr. Eggman \| Egg Golem \| F-6t Big Foot \| Finalhazard \| King Boom Boo \| Knuckles \| R-1/A Flying Dog \| Rouge \| Shadow \| Sonic \| Tails
Moves/Techniques		Amy Flash* \| Black Shield* \| Black Wave* \| Booming Missile* \| Bounce Attack \| Captive Light* \| Chaos Bind* \| Chaos Control \| Chaos Impact* \| Chaos Screw* \| Chaos Spear \| Chaos Strike* \| Charm Ray* \| Crazy Rush* \| Crouch \| Dark Finish* \| Dark Omochao* \| Dig \| Drill Claw \| Drill Drive \| Fire Somersault \| Glide \| Grind Step \| Grinding \| Hammer Punch* \| Heaven's Justice* \| Hell Bomber* \| Hip Drop* \| Hover \| Homing Attack \| Jump Dash \| Kick/Kick Attack \| Knuckle Spin* \| Laser Missile* \| Light Attack \| Light Speed Dash \| Lock-on \| Lock-On Missile \| Magic Hands \| Omochao \| Pick \| Power Flash* \| Power Laser* \| Propeller Punch \| Punch (Eggwalker) \| Punch/Punch Attack \| Rocket Launcher \| Rumble Launcher* \| Screw Kick \| Somersault \| Sonic Wind* \| Speed Up* \| Spin Jump \| Spin Dash \| Spiral Upper \| Storming Heart* \| Super Sonic Boost \| Swim \| Thunder Arrow* \| Time Stop* \| Volkan Cannon \| Wrath of Gaia* \| Zap Laser*
Gimmicks and obstacles		Ancient Ruin \| Ball Switch \| Bungie Vine \| Dash Panel \| Dynamite \| Egg Beetle \| Gravity Control Switch \| Green energy fluid \| Grind Rail \| GUN Military Truck \| High-speed warp tube \| Hint Box \| Hourglass \| Iron ball \| Jump Plate \| Laser field \| Missile \| Pipe \| Point Marker \| Propeller Spring \| Pulley \| Ramp \| Rocket \| Safe \| Spikes \| Spinning drum \| Swing Bar \| Time Stop Switch \| Turtle \| Warp Hole \| Warp Wall \| Weight \| Wide spring
Items	General	Air Bubble \| Balloon \| Chao Egg \| Chao Key \| Chaos Emerald \| Chaos Drive \| Container (Cage, Chao Container, Steel Container, Unbreakable Container, Wooden Container) \| Emblem \| Emerald Shard \| Goal Ring \| Item Box (5 Rings, 10 Rings, 20 Rings, Bomb, Extra Life, Health, High-Speed Shoes, Invincibility, Magnetic Shield, Shield) \| Key Stone (Gate Key) \| Meteorite \| Outfit \| Ring \| Snowboard
Items	Level Up Items	Air Necklace \| Air Shoes \| Ancient Light \| Bazooka \| Booster \| Bounce Bracelet \| Flame Ring \| Hammer Gloves \| Iron Boots \| Jet Engine \| Large Cannon \| Laser Blaster \| Light Speed Shoes \| Magic Gloves \| Mystic Melody \| Pick Nails \| Protective Armor \| Shovel Claw \| Sunglasses \| Treasure Scope
English voice actors		Ryan Drummond (Sonic) \| Connor Bringas (Tails) \| Scott Dreier (Knuckles/GUN Soldiers) \| Jennifer Douillard (Amy Rose) \| David Humphrey (Shadow the Hedgehog) \| Lani Minella (Rouge/Omochao) \| Deem Bristow (Doctor Eggman) \| Moriah Angeline (Maria Robotnik) \| Marc Biagi (Gerald/GUN Soldiers) \| Steve Broadie (President) \| Shelly Fox (Default menu voice) \| Jon St. John (Big) \| Elara Distler (Tikal) \| Tomoko Sasaki (Chao)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Kazuki Hayashi (Tails) \| Nobutoshi Canna (Knuckles) \| Taeko Kawata (Amy) \| Kōji Yusa (Shadow) \| Rumi Ochiai (Rouge) \| Chikao Ōtsuka (Eggman ) \| Etsuko Kozakura (Omochao) \| Yuri Shiratori (Maria) \| Kinryū Arimoto (President) \| Shun Yashiro (Big) \| Shelly Fox (Default menu voice) \| Tomoko Sasaki (Chao)
Music	Songs	"A Ghost's Pumpkin Soup" \| "Believe In Myself" \| "Deeper" \| "Dive into the Mellow" \| "E.G.G.M.A.N." \| "Escape from the City" \| "Fly in the Freedom" \| "For True Story" \| "It Doesn't Matter" \| "Kick the Rock!" \| "Live and Learn" \| "My Sweet Passion" \| "Rhythm And Balance" \| "Space Trip Steps" \| "Supporting Me" \| "The Supernatural" \| "Throw It All Away" \| "Unknown from M.E." \| "Vengeance is Mine"
Music	Albums	Multi-Dimensional Sonic Adventure 2 Original Sound Track \| Passion & Pride: Anthems with Attitude from the Sonic Adventure Era \| Sonic Adventure 2 Battle - Sampler \| Sonic Adventure 2 Official Soundtrack \| SONIC ADVENTURE 2 OFFICIAL SOUNDTRACK VINYL EDITION \| Sonic Adventure 2 Original Soundtrack 20th Anniversary Edition \| Sonic Adventure 2 Vocal Collection: Cuts Unleashed
Other		2G Hi-Speed Shoes \| Angel Island \| Auto Running \| Black Market \| Central City \| Chao Adventure 2^ \| Chao Garden (Dark, Hero, Neutral) \| Chao in Space \| Chao Kindergarten \| Chao Lobby \| Chao Machine \| Chao Race \| Chao Stadium \| Chao Transporter^ \| Chao World \| Corkscrew loop \| Cyclone \| Eclipse Cannon \| Eggman Bombom \| Eggwalker \| Emerald Radar \| Fake Emerald \| Game Over \| Gerald Robotnik's diary \| Health Gauge \| Kart Race \| Prison Island \| Project Shadow \| Rank \| Shuttle loop \| Space Colony ARK \| Station Square \| Teleporter \| Totem pole \| Winding Tunnel Appears or is playable only in the 2P mode ^Exclusive to the Dreamcast version of Sonic Adventure 2*

Shadow the Hedgehog

Playable characters		Shadow (Hero Shadow, Dark Shadow, Super Shadow) \| Shadow Android
Non-playable characters		Black Doom (Devil Doom) \| Dr. Eggman \| Sonic \| Tails \| Knuckles \| Amy \| Rouge \| Omega \| Team Chaotix (Vector, Espio, Charmy) \| Cream \| Cheese \| Maria \| Gerald \| Commander \| President \| Researcher \| Secretary \| Chao
Stages		Air Fleet \| Black Comet \| Central City \| Circus Park \| Cosmic Fall \| Cryptic Castle \| Death Ruins \| Digital Circuit \| Final Haunt \| GUN Fortress \| Glyphic Canyon \| Iron Jungle \| Lava Shelter \| Lethal Highway \| Lost Impact \| Mad Matrix \| Prison Island \| Sky Troops \| Space Gadget \| The ARK \| The Doom \| The Last Way \| Westopolis
Enemies		Ark Missile Turret \| Artificial Chaos (Artificial Chaos P-100, Cell) \| Black Assassin \| Black Hawk \| Black Oak \| Black Volt \| Black Warrior \| Black Wing \| Black Worm \| Big Foot Type A \| Big Foot Type B \| Death Leech \| Death Worm \| Egg Bommer \| Egg Pawn \| Egg Pierrot \| Giant Walker \| Giga Trooper \| Gold Beetle \| Gun Beetle \| GUN Soldier \| GUN Trooper \| Jack Bommer \| Killer Plant \| Mono Beetle \| Rocket Beetle \| Sand Worm \| Shadow Android \| Spark Beetle
Bosses		Black Bull \| Black Doom \| Blue Falcon \| Devil Doom \| Diablon \| Egg Breaker \| Egg Dealer \| Heavy Dog
Moves/Techniques		Chaos Blast \| Chaos Control \| Chaos Spear \| Crouch \| Dark Spin Dash \| Grinding \| Grind Step \| Homing Attack \| Hover \| Jump Dash \| Light Dash \| Mid-Air Attack \| Missile Fever \| Overturn \| Pawn Fever \| Pick up \| Punch \| Ring Fever \| Shadow Fever \| Slide \| Spin Dash \| Spin Jump \| Strafe \| Swift strike \| Tail Swipe \| Triangle Jump
Vehicles		Air Saucer \| Convertible \| GUN Motorcycle \| GUN Vehicle \| HMMWV \| Jump Vehicle
Gimmicks and obstacles		Barrier \| Black Slab \| Case \| Cell Cannon \| City annihilator bomb \| Coaster \| Color Panel \| Drum \| Electrified Rail \| Fan \| Firewall \| Gravity Control Switch \| Green energy fluid \| Gun Lift \| Gun ship \| GUN turret \| Hint Ring \| Jump Panel (Prison Island) \| Jump Panel (ramp) \| Junction switch \| Lantern \| Laser field \| Laser turret \| Light-speed circuit \| Meteorite \| Pole \| Pulley \| Red fruit \| Red Slime \| Rocket \| Secret Door \| Shield switch \| Shooting Gallery \| Small bomb \| Surveillance camera \| Toxic marsh \| Toxic river \| Vine \| Warp Hole \| Wide spring
Items	General	Black Tank \| Bomb Unit \| Chaos Emerald \| Container (Special Weapon Container, Steel Container, Unbreakable Container, Wooden Container) \| Core program \| Defense Unit \| Egg Balloon \| Energy Core \| Floating Item Box \| Goal Ring \| Heal Unit \| Item Box (1-Up, Barrier, Damage Recover, Heat Barrier, Invincible, Magnetic Barrier, Rings) \| President's escape pod \| Ring \| Secret Key \| Temple jewel
Items	Weapons	4-Shot RPG \| 8-Shot RPG \| Bazooka \| Big Worm Shooter \| Big Barrel \| Black Barrel \| Black Sword \| Bomb Fever \| Egg Bazooka \| Egg Gun \| Egg Spear \| Egg Vacuum \| Environment Objects \| Flash Shot \| Gatling Gun \| Grenade Launcher \| Heal Cannon \| Heavy Machine Gun \| Heavy Shot \| Laser Rifle \| Light Shot \| Omochao Gun \| Pistol \| Refractor \| RPG \| Samurai Blade \| Satellite Gun \| Semi-Auto Rifle \| Shadow Rifle \| Splitter \| Sub-Machine Gun \| Survival Knife \| Tank Cannon \| Vacuum Pod \| Wide Worm Shooter \| Worm Shooter
English voice actors		Jason Griffith (Sonic, Shadow) \| Sean Schemmel (Black Doom) \| Mike Pollock (Eggman, Gerald) \| Amy Palant (Tails) \| Dan Green (Knuckles) \| Lisa Ortiz (Amy) \| Kathleen Delaney (Rouge) \| Rebecca Honig (Cream, Maria) \| Carter Cathcart (Vector) \| David Wills (Espio) \| Amy Birnbaum (Charmy) \| Jeff Kramer (Omega) \| Andrew Rannells (GUN Soldier) \| Marc Thompson (Commander) \| Maddie Blaustein (President) \| Bella Hudson (Secretary)
Japanese voice actors		Kōji Yusa (Shadow) \| Jun'ichi Kanemaru (Sonic) \| Ryūzaburō Ōtomo (Black Doom) \| Chikao Ōtsuka (Eggman, Gerald) \| Ryō Hirohashi (Tails) \| Nobutoshi Canna (Knuckles) \| Taeko Kawata (Amy) \| Rumi Ochiai (Rouge) \| Sayaka Aoki (Cream) \| Yuri Shiratori (Maria) \| Kenta Miyake (Vector) \| Yūki Masuda (Espio) \| Yōko Teppōzuka (Charmy) \| Taiten Kusunoki (Omega) \| Takashi Yoshida (GUN Soldier) \| Banjō Ginga (Commander) \| Yutaka Nakano (President) \| Junko Kitanishi (Secretary) \| Ryō Hirohashi (Additional Chao)
Music	Songs	"All Hail Shadow" \| "Almost Dead" \| "E.G.G.M.A.N Doc. Robeatnix Mix" \| "I Am... All of Me" \| "Never Turn Back" \| "The Chosen One" \| "Tripod Baby" \| "Vengeance is Mine" \| "Waking Up" \| "Who I Am" (unused)
Music	Albums	Lost and Found: Shadow the Hedgehog Vocal Trax \| Shadow the Hedgehog Official Soundtrack \| Shadow the Hedgehog Original Soundtrax
Other		Battle Mode \| Black Comet \| Central Information Agency \| Eclipse Cannon \| Dark Gauge \| Dark Rider \| Egg Monitor \| Eggman Fleet \| Expert Mode \| Fire in the Sky Festival \| Health Gauge \| Hero Gauge \| Mother computer \| Prison Island \| Prosperity ritual \| Rank \| Shadow the Hedgehog Flash \| Space Colony ARK \| Tails' Spaceship \| White House

[1] Sonic Team (18 November 2005). Shadow the Hedgehog. PlayStation 2. Sega. Area/level: The Doom. "Maria Robotnik: The researcher has been saved as well! Let's keep going!"

[JSA2SG-2] Enterbrain (10 October 2001). "５０年前の真実". ソニックアドベンチャー2パーフェクトガイド (in Japanese). ISBN 978-4757706255. Retrieved 8 August 2017.

[SA2Flash-3] Sonic Team (11 February 2002). Sonic Adventure 2: Battle. GameCube. Sega. Area/Level: Last Story. "Rouge/Gerald: I don't quite know what happened, or what went wrong. Was it a mistake to create the Ultimate Life Form? I thought it would be something that would benefit mankind... But then the military guards landed on the Colony that day. They were sent to destroy the research project that I had been working on. My colleagues at the research facility, my granddaughter Maria, I hope you are all safe."

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