Aquis

Aquis (シードラ) is a Badnik that takes the form of a sea horse and can shoot fireballs of oil from its snout. Aquis is a Badnik that patrols the Oil Ocean Zone in Sonic the Hedgehog 2.

Sonic the Comic
A pair of Aquis badniks were subordinates to the Arachbot in the Labyrinth Zone when he captured Tails. They were defeated by Sonic and their organic batteries freed.

An Aquis once caused Sonic so much stress that he transformed into Super Sonic to destroy it.

Adventures of Sonic the Hedgehog
A character similar to Aquis appeared in the pilot episode of Adventures of Sonic the Hedgehog. It also appeared in the episode "Untouchable Sonic" via pilot episode footage.

Trivia

 * In Sonic Blast, an unnamed badnik similar to Aquis appears in the Blue Marine Zone.
 * Aquis' Japanese name, Seadra, is the same as the english name of a creature from the Pokémon Franchise.