This article is about the enemies with spiked balls for defenses. You could be looking for .
Orbinaut refers to a series [ of sea urchin-based ] citation needed Badniks that are created by Dr. Ivo Robotnik and are recurring enemies in the . The first Orbinaut models appeared in the original Sonic the Hedgehog series , and have since also appeared outside of the video games.
Sonic the Hedgehog
Orbinauts are said to be based off
sea urchins ( uni in Japanese). Orbinauts are different colors of metal orbs which are able to hover in the air. This Badnik's signature weapons are four spiked balls that ringed around of them. Some Orbinauts throw at its prey which is its only method of attack for some of these Badniks. This is also a major weakness; as once all four spiked balls have been thrown, the hovering Orbinaut itself is completely defenseless.
However some Orbinauts do not throw its spike balls away, but keep moving forward and keep ringing its spike balls at same time as keeping its defense on. It is usually impossible to defeat these types of Orbinauts without getting hit, so it is good to avoid them and simply keep moving. Few Orbinauts utilize its spike balls with different methods to stop the player.
Unidasu ( ウニダス ) ? 
 A blue variety of Orbinaut that sends the four spiked balls around it forward when an enemy is spotted. It first appears in the Labyrinth Zone from . It is arguably the most recognizable rendition of Orbinaut, as it was retooled with a modernized design for Sonic the Hedgehog . Sonic Adventure
Uni Uni ( ウニウニ ) ? 
 A green variety of Orbinaut that keeps the four spiked balls around it for defense. Unlike the previous model, it can only be defeated while Sonic is invincible or his jump is timed very carefully (or during the brief invulerability period once Sonic loses Rings or his Shield). It first appears in the Star Light Zone from .
Sonic the Hedgehog
 A metallic gray variety that only appears in the Launch Base Zone. It keeps the four spiked balls around it for defense, and only move when the player also moves. It can only be defeated while the player is invincible or with a well-timed Insta-Shield move by Sonic (or, again, while the player character is flashing after being hit).
A red variety of Orbinaut that has four fireballs (one in ) around it instead of spiked balls. It first appears in the Sonic Blast Hill Top Zone from . It became the most recurring offshoot of the Orbinaut series, with remodeled versions debuting in Sonic the Hedgehog 2 .
Appears in the IceCap Zone from and has four spiked ice balls around it. It sends the spiked balls forward to attack. Unlike projectiles from Orbinaut, the ice balls will be destroyed with no ill effects to the controlled character if they have any shield or contact with Sonic the Hedgehog 3 Knuckles' knuckles.
The Flamer is the latest variation of this Badnik from . Flamers are yellow and have spinning flamethrowers. Flamers can be found in Sonic the Hedgehog 4: Episode II Oil Desert Zone and can temporarily ignite fire on the oily landscape.
Navigation Templates to Orbinaut
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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 (
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