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Sonic News Network
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A newly developed subaquatic Seal type robot. Its breath can freeze the water around them in an instant, creating obstacles when Sonic needs to look for air bubbles.

Sonic The Hedgehog 4: Episode II website[1]

Steelion[1] (ドドン[2] Dodon?) is an enemy that appears in the Sonic the Hedgehog series. It is a mass-produced, seal-based Badnik model created by Dr. Eggman that roams the underwater areas of White Park Zone.


Steelions bear a strong resemblance to sealions. They are mainly purple with pale yellow underbellies and muzzles. They also have black noses and black eyes. They also have small gray claws on their front flippers and pale yellow rear flippers.


A Steelion in White Park Zone, from Sonic the Hedgehog 4: Episode II.

In Sonic the Hedgehog 4: Episode II, the Steelions appear as enemies. They are only encountered in the underwater areas of White Park Zone Act 3.

In gameplay, Steelions attack by emitting a freezing breath in front of them, usually as soon as they spot the playable character. This breath causes a small area in front of the Steelion to turn into a chunk of ice. The primary reason for this attack is to block the paths around the playable character, thereby preventing them from taking shortcuts or reaching safer areas. In addition, should the playable character get caught within the vicinity of a Steelion's freeze breath when it is performed, the playable character will take damage. Because the Steelions tend to perform their attack as soon as the player approaches, they can be hard to defeat. When sucessfully destroyed though, they will reward the player 100 points and release an Animal.

Powers and abilities

In addition to be designed to be aquatic swimmers, the Steelions can emit freezing breaths from their mouths which can instantly freeze large amounts of water around them.


Concept artwork


  1. 1.0 1.1 Sega . Sonic The Hedgehog 4 Episode II official website. Badniks: Steelion. Sega. Archived from the original on 24 May 2019.
  2. Sega . Sonic the Hedgehog 4 Episode II official website (Japanese). Characters: Steelion. Sega. Archived from the original on 17 August 2017. Retrieved on 30 July 2015.