The Emerald Radar in
. Sonic Adventure 2
Emerald Radar is a game mechanic used by Knuckles the Echidna and Rouge the Bat in and its sequel, Sonic Adventure . When using this, the user can locate Sonic Adventure 2 Emerald Shards or other treasures in a level to obtain them in order to complete the said level.
The Emerald Radar appears as three squares each depicted with an Emerald shard (or other treasures depending on the stage) centered in the bottom of the game's HUD. Everytime the player approaches an Emerald Shard, its corresponding Emerald Shard on the Emerald Radar will start glowing at a certain color and a sound will play depending on the range between the user and the Emerald.
Knuckles using the Emerald Radar in
. Sonic Adventure DX: Director's Cut
The Emerald Radar appeared for the first time in
where it was only used by Sonic Adventure Knuckles. The colors of the Emerald Shards in the radar change in accordance to the distance of the shard away from the player's position in the following order of furthest to closest: green, yellow, pink and red. The Radar can also detect multiple shards at the same time and will each have their own.
Sonic Adventure 2
Knuckles using the Emerald Radar in
Wild Canyon, from . Sonic Adventure 2: Battle
The Emerald Shard reappeared in
where it was used by Knuckles and Sonic Adventure 2 Rouge in their levels. In this game though, there are only three colors the Emerald Radar will indicate: (from furthest to closest: green, yellow and red). Unlike its previous appearance, the Emerald Radar only provides an indication for one Emerald Shard at a time.
In the 2P mode of the game,
Tikal and Chaos can also use the Emerald Radar although their radars do not share the same extent of detecting Emerald Shards; Tikal's radar is the weakest one while Chaos's one is the strongest among.
In other media
How do you do that, anyway? Sense the Emeralds and stuff.
I don't know. It's just a sixth sense I've always known. They say the best treasure hunters can "feel" what they're looking for this way.
Charmy, then Knuckles, from . Sonic Universe #64
Knuckles using the Emerald Radar, from
. Sonic Universe #63
The Emerald Radar also appears in the
and its spin-offs published by Sonic the Hedgehog Archie Comics. It is a natural trait of Knuckles, essentially a sixth sense to the echidna which is said that all the best treasure hunters have. It a skill Knuckles gained in the Post-Super Genesis Wave timeline.
Knuckles first used the Emerald Radar to help the
Chaotix find a Chaos Emerald needed to undo the Shattered World Crisis. Using his Emerald Radar, Knuckles and the Chaotix traveled from  Pumpkin Hill Zone to Aquatic Mine Zone to find the nearby Chaos Emerald before the Hooligans did first. Fortunately, Knuckles and the Chaotix had found a Chaos Emerald, but upon receiving it, they found Chip holding onto it.
Main article | Gallery | Beta Elements | Staff | Re-releases ( DX | 2010) Scripts ( Sonic, Tails, Knuckles, Amy, Big, Gamma, Super Sonic)
Sonic ( Super Sonic) | Tails | Knuckles | Amy | E-102 Gamma | Big | Eggman | Chaos ( Chaos 1, Chaos 2, Chaos 4, Chaos 6, Perfect Chaos) | Froggy | Tikal | Pachacamac | Grandma | Metal Sonic* | Cream* | Mr. Know-It-All | Unnamed Sonic robot* | Chao | Flickies | Animals ( Deer, Elephant, Gorilla, Kangaroo, Koala, Lion, Mole, Parrot, Peacock, Penguin, Rabbit, Seal, Sea Otter, Skunk, Swallow)
Beat | Bladed Spinner | Boa Boa | Buyoon | Cart Kiki | Cop Speeder | Egg Keeper | Electro Spinner | Gola | Ice Ball | Kiki | Leon | mechanical fish | Pirate | Rhinotank | Spiky Spinner | Sweeper
Beta ( Mark II) | Gamma | Delta | Epsilon | ZERO | Zeta
Adventure Fields Egg Carrier | Mystic Ruins | Station Square
Chao Gardens Station Square Garden | Mystic Ruins Garden | Egg Carrier Island
Angel Island | Black Market | Chao Stadium | Shrine of Knuckles's race | Tails' Lab
Emerald Coast | Windy Valley | Casinopolis | IceCap | Sky Chase | Twinkle Park | Speed Highway | Red Mountain | Sky Deck | Lost World | Hot Shelter | Sand Hill | Twinkle Circuit | Final Egg
Chaos 0 | Chaos 2 | Chaos 4 | Chaos 6 | E-101 Beta | E-101 Mark II | E-102 Gamma | E-103 Delta | E-104 Epsilon | E-105 Zeta | Egg Carrier | Egg Hornet | Egg Viper | Egg Walker | Knuckles the Echidna | Perfect Chaos | Sonic the Hedgehog | ZERO
Arm Punch | Bolt of lightning | Bomb Attack | Bomb Gun Attack | Charge | Climb | Dig | Double Punch | Earthquake Attack | Electric Arm | Energy Ball Attack | Flame Thrower Attack | Flight Mode | Glide | Guiding Missiles | Hammer Attack | Hammer Jump | Hover | Homing Attack | Instantaneous Liquefaction | Laser Beam Attack | Homing Missile Launch | Homing Tail Slice | Inhale Attack | Jump Attack | Laser Gun | Light Speed Attack | Light Speed Dash | Lure Attack | Marble Attack | Maximum Heat Knuckles Attack | Phantom Shadow Move | Pick | Propeller Flight | Punch | Punch Attack | Quarter Attack | Rapid Tails Attack | Scorpion Attack | Shockwave Attack ( Chaos 6) | Sonic Boom | Spin Attack | Spin Dash | Spin Hammer Attack | Spin Jump | Spinning Spike Attack | Spouting Attack | Squash Roll Attack | Swing Punch | Tails Attack
Level Up Items Ancient Light | Crystal Ring | Fighting Gloves | Jet Anklet | Jet Booster | Laser Blaster | Life Belt | Light Speed Shoes | Long Hammer | Lure | Power Rod | Rhythm Badge | Shovel Claw | Warrior Feather
English voice actors
Ryan Drummond ( | Sonic) Corey Bringas ( | Tails) Michael McGaharn ( | Knuckles) Deem Bristow ( | Eggman) Jennifer Douillard ( | Amy) Jon St. John ( | Big) Elara Distler ( | Tikal, Station Square Train Voice, Default Menu Voice) Steve Broadie ( | Gamma, Pachacamac, Mystic Ruins Train Voice) Tomoko Sasaki (
Japanese voice actors
Jun'ichi Kanemaru ( | Sonic) Kazuki Hayashi ( | Tails) Nobutoshi Kanna ( | Knuckles) Chikao Ōtsuka ( | Eggman) Taeko Kawata ( | Amy) Shun Yashiro ( | Big) Kaori Asō ( | Tikal) Jōji Nakata ( | Gamma) Tōru Ōkawa ( | Pachacamac) Kaho Kōda (Station Square Train Voice) | Nobutoshi Kanna (Mystic Ruins Train Voice) | Elara Distler (Default Menu Voice) | Tomoko Sasaki (
/ Original Soundtrack / Remix / Vocal Mini Album / 20th Anniversary Passion & Pride
Believe In Myself | It Doesn't Matter | Lazy Days | My Sweet Passion | Open Your Heart | Unknown from M.E.
777 Slots Pinball | Air Bubbles | Auto Running | Bumper | Bumper Car | Cannon | Capsule | Card & Pinball | Cart pass | Chao Egg | Chaos Emerald | Chao in Space | Chao Machine | Chao Search* | Conveyor Belt | Corkscrew loop | Crank | Dash Panel | Dash Ring | Debug Mode | Doll | Drum Can | Egg Carrier | Egg Carrier 2 | Emblem | Emerald Radar | Emerald Shard | Employee ID Card | Fan | Flipper | Fountain | Freeze | Goal Balloon | Hanging Bell | Hedgehog Hammer | Helicopter | Hint Box | Icicle | Item Box ( Bomb, Extra Life, Invincibility, Lightning Shield, Power Sneakers, Shield, Super Ring) | Jump Panel | Key Stone ( Gold Statue, Ice Stone, Silver Statue, Wind Stone) | Laser Field Block | Life gauge | Lit Panel | Mirror | Mission Mode | Monkey Detonation Switch | Mystic Ruins | Pinball Shooter | Power cube | Ramp | Ring | Rocket | Sandboard | Satellite | Shrine of Knuckles's race | Shuttle loop | Sky Chase Dragon | Slot Machine | Snowboard | Sonic Token | Station Square | Station Square Police Department | Switch | Teleporter | Tornado | Tornado 2 | Transporter Machine | Trick Jump Panel | Wide Spring | Wind Path | Zip Line
. Sonic Adventure DX: Director's Cut
Main article | Gallery | Beta elements | Staff | Re-releases ( Battle | 2012)
Sonic ( Super Sonic) | Tails | Knuckles | Amy* | Shadow ( Super Shadow) | Rouge | Eggman | Big*^ | Tikal* | Chaos* | Chao ( Dark Chao/ Walker*, Hero Chao, Chao Walker*, Chaos Chao) | Metal Sonic* | Gerald | Maria | President | Secretary | Sigma-Alpha 2 | 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)
G.U.N troops Blue Eagle | Bomb Beetle | Bomb Wing | Gold Beetle | 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
Artificial Chaos ( Artificial Chaos P-1, Artificial Chaos P-100, Cell, Float Type, Guard Type) | Badniks ( Buzz Bomber, Chopper, E-1000, Gola, Unidus, Kiki) | Boo | Boom Boo | Egg Beetle
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** | 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** | Cannon's Core | Green Hill
Downtown Race | Grind Race | Planet Quest | Pool Quest | Deck Race | Pyramid Race
Black Market | Central City | Chao Garden ( Dark, Hero, Neutral) | Chao Kindergarten | Chao Stadium | Prison Island | Station Square | Space Colony ARK | Moon
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
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*
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 | 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 (
Japanese voice actors
Jun'ichi Kanemaru ( | Sonic) Kazuki Hayashi ( | Tails) Nobutoshi Kanna ( | 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 (
OST / Vocal Collection / Official / Sampler / 20th Anniversary /
Passion & Pride 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
Angel Island | Ancient Ruin | Auto Running | Ball Switch ( Gravity Control Switch, Hourglass, Time Stop Switch) | Bomb | Bungie Vine | Chao Adventure^ | Chao Adventure 2^ | Chao Eggs | Chao in Space | Chao Key | Chao Machine | Chao Transporter^ | Chao World | Chaos Emerald | Chaos Drive | Container ( Cage) | Corkscrew loop | Cyclone | Dash Panel | Dreamcast | Dynamite | Eclipse Cannon | Eggman Bombom | Eggwalker | Emblem | Emerald Radar | Emerald Shard | Fake Emerald | Gerald Robotnik's diary | Goal Ring | Green energy fluid | Grind Rail | GUN Military Truck | High-speed warp tube | Health Gauge | Hi-Speed Shoes | Hint Box | Item Box ( Bomb, Extra Life, Health, Invincibility, Magnetic Barrier, Power Sneakers, Shield, Super Ring) | Kart Race | Key Stone ( Gate Key) | Laser Field Block | Meteorite | Missile | Outfit | Pipe | Project Shadow | Propeller Spring | Pulley | Rank | Ramp | Ring | Rocket | Safe | Shuttle loop | Snowboard | Spinning drum | Swing Bar | Teleporter | Totem Pole | Turtle | Warp Hole | Warp Wall | Weight | Wide Spring | Winding Tunnel
*Appears or is playable only in the 2P mode
**Stage is also playable in 2P mode ^ Dreamcast version of Sonic Adventure 2 only