Octopus (オクトパス Okutopasu?) is a octopus-like badnik created by Doctor Robotnik. It makes its only appearance in the Blue Marine Zone in Sonic Blast. They are simple, red octopus robots (hence the name) with eight tentacles, similar to the Octus badniks from Sonic the Hedgehog 2.
These badniks swim vertically through the water or air, as they only move upward and downward. The player can easily defeat these enemies with a Spin Jump.