Appearances in other media
Dark blue, red Black, gray
Levitation Orbital spiked balls
Unidasu (, ウニダス Unidasu ) ?  is a recurring enemy in the  . It is a Sonic the Hedgehog series Badnik variant and an Orbinaut model created by Dr. Eggman which fires spiked balls at enemies.
As part of the
Sea Urchin-like Orbinaut series, Unidasus resemble its other variations such as Uni Uni. They have a spherical body with wide eyes and four red spiked balls orbiting their body. Usually, their body is blue when in their neutral state, but when spotting an enemy, their body turns red. They also usually have black eyes, but had cyan eyes in .
Sonic Lost World
and Sonic Adventure , the Unidasus' bodies were colored black with cyan eyes. They were also given a grey bottom plate and small motors on their back. Orbiting them are four black, explosive orbs with white spikes on them.
Sonic Adventure 2
Sonic the Hedgehog (1991)
First appearing in
, the Unidasus appears in Sonic the Hedgehog (1991) Labyrinth Zone and Scrap Brain Zone Act 3. In the case of the latter, they are normally found in the underwater sections where they are cramped inside narrow passages, thus obstructing the player's path. The player's best option is to let them fire their spiked balls and then attack them from a vulnerable angle.
In the 8-bit version of the
game with same name, Unidasus once again appears in Labyrinth Zone. In this version, they have a light blue body instead. That aside, they behave like their 16-bit counterparts. Like other Badniks in the game, they also do not have any Animals powering them.
The Spiky Spinner as it appears in
. Sonic Adventure
and Sonic Adventure , the Unidasu is referred to as the Sonic Adventure DX: Director's Cut Spiky Spinner  (. In this game, they were given a slight redesign, making them look more mechanized. They appear in the following ウニダス  Unidasu , lit. "Unidus") ? Action Stages for each character:
In gameplay, Spiky Spinners hover back and forth. They start attacking should the player get close enough and will use one of two attack patterns: they either throw their explosive spiked balls at the player or rotate their spiked balls over a wider radius for a sweeping attack. After losing their spiked balls, the Spiky Spinners will still follow the player, but are now wide open to attacks. When destroyed, they release a collectible
Sonic Adventure 2
An Unidus approaching
Knuckles in . Sonic Adventure 2
and Sonic Adventure 2 , the Unidasu is named Sonic Adventure 2: Battle Unidus  (. They feature the same design they had in ウニダス Unidasu ) ? . The Unidus appears in the following Sonic Adventure Action Stages for each character:
In gameplay, Unidus use their attack pattern from
Sonic Adventure where they rotate their spiked balls over a wider radius for a sweeping attack. However, they will not launch their spiked balls at the player. Defeating an Unidus rewards the player with one hundred points and releases a collectible Animal inside it.
Sonic Rivals 2
, the Unidus from Sonic Rivals 2 appears as a collectible card. Their card is collected by getting the high score in the Sonic Adventure 2 boss duel for Neon Palace Zone.
Sonic the Hedgehog 4: Episode I
The Unidasu in
. Sonic the Hedgehog 4: Episode I
, the Unidasus (referred to here as Sonic the Hedgehog 4: Episode I Spike Spinners ) appear in  Lost Labyrinth Zone with a slightly upgraded design. Despite that, they have the same attack patterns as in previous games. However, Unidasus' bodies are in this game constantly red instead of changing when spotting Sonic.
Sonic Lost World
A mad Unidasu in the
Wii U version of . Sonic Lost World
, the Unidasu appears in both the Sonic Lost World Wii U and Nintendo 3DS version of the game. During the game, it turns out that the Badniks (the Unidasus included) got hijacked by the Deadly Six.
Wii U version of the game, Unidasus can be found in Frozen Factory Zone 4 and Sky Road Zones 1, 4 and ?. They also retain their coloration change from blue to red when spotting the player. In the 2.5D side scrolling sections, Unidasus hover around while their spiked balls orbit them laterally. They are here often stacked with Uni Unis to create huge enemy walls. In the 3D sections of the game, their spikes orbit them horizontally instead. When noticing Sonic, their spiked balls freeze in their position and are launched laterally at the player one by one rather fast.
Nintendo 3DS version of the game, Unidasus appears only in the 3D sections in Sky Road Zone 2. Unlike the Wii U version, Unidasus never fire their spiked balls or turn red when spotting the player, and instead however around with their spiked balls (much like the Uni Unis). The player has to avoid hitting their spike balls by targeting their body from above.
Powers and abilities
Unidasus floats around paths with spiked balls orbiting their body. Once they spot the player though, the Unidasus' body turn from blue to red, and they start firing their spiked balls straight towards the player one by one (albeit slowly), usually in orbital order from the bottom of their body. Their spiked balls usually orbit them laterally, but in 3D installments such as
and Sonic Adventure , they occasionally orbit them horizontally.
Sonic Lost World
In most of the games, Unidasu's spiked balls are thick obstacles, while in
Sonic Adventure, spiked balls are explosive after they come in contact with its victim.
In other media
A group of Orbinauts as they appear in
comic series and its spin-offs published by Sonic the Hedgehog Archie Comics, the Unidasus' name is never mentioned and are instead referred to as Orbinaut. They were among the first generation of badniks produced by Dr. Robotnik. Over time though, the Orbinauts were rendered obsolete by more advanced robots and got decommissioned.
Following the events of
Worlds Collide, the Orbinauts' history became nearly identical to that of their game counterparts.
One of artworks showcasing Uni Uni and Unidasu from the Sonic World feature of . Sonic Jam ↑
( Sonic the Hedgehog (1991) Sega Genesis) Japanese instruction manual pg. 44. ↑
( Sonic Adventure Dreamcast) Japanese instruction manual pg. 34. ↑
4.0 4.1 . Prima Games. 20 June 2001. p. 18. "Eggman's Robot Series". Sonic Adventure 2: Prima's Official Strategy Guide ISBN 978-0761536147. "Be careful when you're close to Unidus. Smaller spike balls circle a larger spike ball and will hurt you (surprise) if you touch them. You can't hurt the circling spike balls, so attack the central one as it move around on the ground. Hit its center, and the Unidus is history."
Pattenden, Mike (4 January 1993). "Robotnik's Badniks". . Fantail. p. 36. Stay Sonic ISBN 978-0140903904. "Orbinauts are extraordinary creatures. Part animal, part machine, all nasty, they can be found underwater in the Labyrinth Zone, on dry land in the Star Light Zone and in the Hilltop Zone in Sonic II. They come in all colours, some of them throw four spiky missiles, some have missiles but don't throw them, and some don't even have missiles (Sonic's careful of those ones because they can't be killed) but they all have a middle bit with big eyes, and they are all slow-moving. If Sonic sees an Orbinaut, back away from it. Jump over the missiles, then attack. If they don't throw their missiles, Sonic jumps over them."
"Additional Characters". . p. 29. Sonic the Hedgehog - Classic Style Guide ↑
7.0 7.1 "A new series of Sea Urchin type robots which were developed based on the "Orbinauts" & "Spike Spinners" featured in Episode I. The blasting flames of the burners are certainly dangerous, but those fires will spread widely in oily places. Take extra care." —
Flamer's profile from website. Sonic The Hedgehog 4: Episode II ↑ 8.0 8.1
( Sonic Adventure Dreamcast) North American instruction manual pg. 31.
Navigation Templates to Unidasu
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*Exclusive to the
2013 re-release of . Sonic the Hedgehog
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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 | Explosion Trap | 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 | Glitches | 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 | 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 (
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
Sonic | Tails | Animals ( Flicky, Pocky, Pecky, Cucky, Picky) | Dr. Eggman | Metal Sonic
Asteron | Balkiry | Batbot | Bubbles | Burrobot | Buzzer | Chop Chop | Chopper | Clucker | Crawl | Flamer | Fullboar | Jaws | Mantis | Moto Bug | Newtron | Orbinaut ( Uni Uni, Unidasu) | Sandworm | Scarabesque | Shellcracker | Slicer | Snowy | Spikes | Steelion | Turtloids | Zoomer
Episode II Zones Sylvania Castle Zone | White Park Zone | Oil Desert Zone | Sky Fortress Zone | Death Egg mk.II Zone | Special Stages
Episode Metal Acts
Episode Metal Act 1 | Episode Metal Act 2 | Episode Metal Act 3 | Episode Metal Act 4
Egg Serpentleaf | Metal Sonic | Egg Scrap Mech | Metal Carrier | Metal Sonic and Egg Mobile | Metal Sonic | Egg Heart
Copter Combo | Propeller Flying | Homing Attack | Rolling Combo | Spin Attack | Spin Dash | Spin Jump | Submarine Combo | Tornado Boost
Air Bubbles | Bumper | Capsule | Booster | Chaos Emerald | Flipper | Giant Ring | Monitor ( Super Ring, Shield, Power Sneakers, Invincibility, Extra Life, Special Combination, Combination Dash) | Ring | Spring | Star Post | Red Star Ring | Spikes | Switch | Signpost | Zip Line
Conveyor Belt | Crusher | Death Egg mk.II | Fan | Flip Platform | Little Planet | Level Select | Lost Labyrinth treasure | Platform-raising Wheel | Original Soundtrack ( & Episode I) | Strange Relief | Ring Shooter | Stardust Speedway | Shuttle loop | Tails' rocket | Time Attack | Tornado | Totem pole
Main article | Gallery | Glitches | Script | Credits ( Wii U, 3DS) | Re-releases ( PC)
Sonic ( Super Sonic) | Tails | Dr. Eggman | Orbot | Cubot | Knuckles | Amy | Deadly Six ( Zavok, Zazz, Zomom, Master Zik, Zeena, Zor) | Yacker* | Animals ( Cucky, Flicky, Pecky, Picky, Pocky, Ricky, Rocky) | Omochao* | NiGHTS^ | Yoshi^
Stages Windy Hill | Desert Ruins | Tropical Coast | Frozen Factory | Silent Forest | Sky Road | Lava Mountain | Hidden World* | Special Stage** | Nightmare Zone^ | Yoshi's Island Zone^ | The Legend of Zelda Zone^ | Circus*
Badniks Antlion | Antlion Mother* | Anton* | Aquis* | Balkiry | Ball Hog* | Bat Brain | BFB* | Bladed Spinner** | Blowfish Transporter | Blaster* | Bomb* | Boo* | Boom Boo* | Burrobot* | Buzz Bomber | Caterkiller | Chopper* | Clucker | Cluckoid* | Coconuts* | Crabmeat* | Crawl | Crawlton | Dragonfly* | Dung Beetle* | Egg Pawn | Electro Spinner** | Galaga Bee* | Gohla | Grabber | Gustav Turtle | Jaws | Laser Grabber* | Madmole* | Manbou* | Manta* | Moto Bug | Mushmeanie* | Nebula* | Newtron | Octus* | Orbinaut ( Uni Uni, Unidasu) | Pata-Bata* | Penguinator | Sandworm | Slicer | Snale Blaster* | Spiker* | Spikes* | Sprinkler* | Tarantula* | Tonber* | Turtloids* | Utsubo*
Baku Baku* | Cactus Ball | Sandworm | Sheep* | Surprise Crocodile* | Yeti*
Zazz | Zomom | Master Zik | Zeena | Zor | Zavok | Deadly Six | Eggrobo
Parkour Somersault Kick** | Wall Climb** | Wall Jump** | Wall Run | Vault Dash*
Bound Jump** | Charged Dash** | Dash | Double Jump | Flying Kick* | Grind Step | Grinding | Sky Dive | Spin Dash | Spin Jump
Wisps White* | Cyan | Yellow | Indigo | Crimson* | Magenta* | Green* | Black*^ | Red** | Ivory** | Gray**
Color Powers Cyan Laser | Yellow Drill | Indigo Asteroid | Crimson Eagle* | Magenta Rhythm* | Green Hover* | Black Bomb*^ | Red Burst** | Ivory Lightning** | Gray Quake**
RC Vehicles Helicopter RC Vehicle | Fighter Jet RC Vehicle | Stealth Jet RC Vehicle | Hovercraft RC Vehicle | UFO RC Vehicle | Balloon RC Vehicle | Omochao RC Vehicle
** Materials Green Material** | Yellow Material** | Blue Material** | White Material** | Iron Material** | Black Material** | Red Material** | Bronze Material** | Silver Material** | Gold Material**
English voice actors
Roger Craig Smith ( | Sonic) Mike Pollock ( | Eggman) Kate Higgins ( | Tails) Travis Willingham ( | Knuckles, Zavok) Cindy Robinson ( | Amy) Kirk Thornton ( | Orbot, Master Zik) Wally Wingert ( | Cubot) Liam O'Brien ( | Zazz) Patrick Seitz ( | Zomom) Stephanie Sheh ( | Zeena) Sam Riegel (
Japanese voice actors
Junichi Kanemaru ( | Sonic) Chikao Ōtsuka ( | Eggman) Ryo Hirohashi ( | Tails) Nobutoshi Kanna ( | Knuckles) Taeko Kawata ( | Amy) Mitsuo Iwata ( | Orbot) Wataru Takagi ( | Cubot) Jōji Nakata ( | Zavok) Yutaka Aoyama ( | Zazz) Yumi Tōma ( | Zeena) Mugihito ( | Master Zik) Chafūrin ( | Zomom) Yūki Tai (
1-Up | Air Bubbles** | Apple | Archie Sonic Halloween Comic Fest 2013 | Asteroid Ring | Auto Running* | Balloon* | Bound bell* | Billiard Ball | Bingo | Bonus Point* | Cacophonic Conch | Cage | Cannon* | Case** | Casino Token* | Chaos Emerald | Cloud | Coconut* | Conveyor Belt* | Dash Panel | Dash Rail | Dash Ring** | Extractor | Fan** | Flipper | Flower Cannon | Flywheel** | Freeze | Grind Rail | Havok | Health Gauge** | High-speed warp tube* | Hint Ring | Item Box ( Aqua Shield**, Flame Shield, Invincibility, Power Sneakers, Super Ring, Thunder Shield, Warp*) | Lost Hex | Metal nut* | Miles Electric | Minecart | Mission | Moon Mech | Musical note | Number Ring* | Pinball Shooter* | Planetoid Spring* | Prism | Rank** | Ring | Roboticization | Seesaw | Slot Machine* | Snowball | Snowball Sonic* | Snowblower | Sphere** | Spring | Tails' Lab** | Time Attack* | Tornado | Totem Pole | Truffle Cannon* | Virtual Hedgehog* | Windmill* | Wisp Away* | Wisp Gauge | | Without Boundaries: Sonic Lost World Original Soundtrack Zeti
"*" Exclusively to
Wii U version "**" Exclusive to Nintendo 3DS version "^" Exclusive to the Wii U version and downloadable content.