Appearances in other media
Levitation Orbital spiked balls
Uni Uni (, ウニウニ ) ?  also known as  Orbinaut,  is a recurring enemy in the  which first appeared in Sonic the Hedgehog series . It is a Sonic the Hedgehog (1991) Badnik variant and an Orbinaut model created by Dr. Eggman. Besides a different coloration from the Unidasu, they are programmed with alternative attack patterns.
Uni Uni belongs to the
Sea Urchin-like Orbinaut series. As such, they look similar to their other variations. They have a green spherical body with wide eyes and four yellow spiked balls orbiting their body. They usually have black eyes, but had cyan eyes in .
Sonic Lost World
, the Uni Unis' design is more detailed. They have two lines encircling it vertically and one horizontally. They also have two black bases on both sides of their body.
Sonic the Hedgehog 4: Episode I
Powers and abilities
Orbinaut, Uni Unis have spiked balls that orbit their body at slow speed, unlike the Unidasu' which releases all their spiked balls at victims; it can thus be considered more of a defensive model rather than offensive one. This makes Uni Unis hard to defeat and dodge. They simply keep hovering forward, never stopping in place. Their spiked balls usually orbit them laterally, but in , they are occasionally seen orbiting them horizontally.
Sonic Lost World
Sonic the Hedgehog (1991)
First appearing in the original
, the Uni Unis are found around the highways of Sonic the Hedgehog Star Light Zone. Due to their constantly orbiting spiked balls, they are hard to avoid at high speed. However, the player can slip under them with a Spin Attack. They are best defeated while the player is invincible, although the player can also destroy them with a well-aimed hit or with a direct attack immediately after gaining invulnerability from taking damage.
In the 8-bit version of the
game with same name, the Uni Uni appear only in Sky Base Zone Act 1. Their appearance is also different, having a pinkish body surrounded by yellow spiked balls. Otherwise, they behave identically to their 16-bit counterparts. Like all the other Badniks, they do not have Animals as power sources.
, the Uni Uni made an appearance as one of the game's collectible cards. It is again referred to as "Orbinaut."
Sonic the Hedgehog 4: Episode I
The Uni Uni in
. Sonic the Hedgehog 4: Episode I
, Uni Unis appear in Sonic the Hedgehog 4: Episode I Lost Labyrinth Zone with a slightly upgraded design. Despite that, they have the same attack patterns as in previous games. However, they will expand their spiked balls' area once they detect Sonic.
Nintendo DS version of , the Uni Unis appear in Sonic Colors Planet Wisp, Aquarium Park and Asteroid Coaster. They look similar to how they did in Sonic the Hedgehog 4: Episode I, and appear both above ground and in underwater sections. Some Uni Unis block openings for the player to pass through while others move up and down. The best way to destroy them is by using Color Powers.
Sonic Lost World
Uni Uni in the 3D sections in the
Wii U version of . Sonic Lost World
In both version of
, Uni Unis are featured as recurring enemies. During the game, it turns out that the Sonic Lost World Badniks (the Uni Unis included) got hijacked by the Deadly Six. Uni Unis are found in Windy Hill Zone 1-2, Frozen Factory Zones 1 and 4, Silent Forest Zone 4 and Sky Road Zone 4 in Wii U version of the game. In Nintendo 3DS version, they are found in Tropical Coast Zones 2-3, Frozen Factory Zone 1 and 3 and Sky Road Zone 1.
In the 2.5D side scrolling sections in the Wii U version, Uni Unis usually hover back and forth in one place while their spiked balls orbit them laterally. These Badniks usually come together in stacks to create huge enemy walls. Exclusively in the Wii U version, they drop their spiked balls in a rain when the player approaches them. However, this leaves them defenseless against attacks.
During the main 3D sections in Wii U version and throughout the Nintendo 3DS version, Uni Unis' spiked balls orbit them horizontally. They will also move towards
Sonic when he gets close to them. In the Nintendo 3DS version, Uni Unis usually appear individually or in groups with different Badniks, but they do not drop their spiked balls like in the Wii U version. The player is best advised to attack the Uni Unis from above without touching their spiked balls.
In other media
Sonic the Hedgehog Story Comic
A single Orbinaut appears briefly in
Sonic the Hedgehog Story Comic 's story Volume 2 Clash!! South Island. In Star Land Zone, it quickly appears in front of Sonic, who used the seesaw to get Egg Capsule. As the Orbinaut tries to stop him, Sonic uses Spin Attack which knocks Orbinaut from his way.
Sonic the Comic
The Orbinaut in
. Sonic the Comic
series published by Sonic the Comic Fleetway Editions, the Uni Unis' name is never mentioned and are instead referred to as Orbinauts. In this media, they are a part of Dr. Robotnik's Badnik army and are among the first generation of Badniks the doctor produced. Depending on the artist, the Orbinauts' design or coloration would be slightly different between each issue.
The Orbinaut in the Archie Comics.
comic series and its spin-offs published by Sonic the Hedgehog Archie Comics, the Uni Unis' name is never mentioned and are instead referred to as Orbinauts. 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.
Sonic X (comics)
Sonic and his group avoiding Orbinauts in comics. Sonic X
comic series published by Sonic X Archie Comics, a group of Uni Uni Badniks appear in a virtual reality version of Star Light Zone. As they keep moving slowly forward, Sonic, Knuckles, Amy and Rouge are seen ducking under of them.
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
( Sonic the Hedgehog (1991) Sega Genesis) Japanese instruction manual pg. 44.
One of artworks showcasing Uni Uni and Unidasu from the Sonic World feature of . Sonic Jam ↑
, "No Thanks for the Memories! Part Two" Sonic X #11
Navigation Templates to Uni Uni
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Roger Craig Smith ( | Sonic) Mike Pollock ( | Eggman) Kate Higgins ( | Tails) Travis Willingham** ( | Knuckles) Cindy Robinson** ( | Amy) Kirk Thornton** ( | Shadow) Wally Wingert ( | Cubot) Quinton Flynn** ( | Silver) Laura Bailey** ( | Blaze) Karen Strassman** ( | Rouge) Michelle Ruff** ( | Cream) Keith Silverstein** ( | Vector) Troy Baker** ( | Espio) Colleen O'Shaughnessey** ( | Charmy) Vic Mignogna** (
Japanese voice actors
Junichi Kanemaru ( | Sonic) Chikao Ōtsuka ( | Eggman) Ryo Hirohashi ( | Tails) 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) Taiten Kusunoki** (
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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 Canna ( | 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 (
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