|This character exists primarily or exclusively within the Sonic X anime or comic continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
It was first seen when Amy Rose angrily throws a coconut into the ocean. It then hits Octoron's head, causing a bump. Octoron then submerges and is not seen for a while. Later it fights Sonic but it snatches Sonic with one of its tentacles and dunks him in the water. Amy then severs one of its tentacles, causing it to fall into the sea. Sonic then pierces Octoron's dome and smashes its insides. It fails and then explodes. Octoron is 15.5 meters (44.5 feet) tall and weighs 550 kg (1212 lbs).