Chainspike has a round, cyan-colored body which has four spiky spears at its top, bottom and side sections. Chainspike also has a glowing eye in the middle of its black crossline.
Chainspike hovers inside the Death Egg, guarding the space station and zipping around at high speeds. They pause briefly as their eyes start to glow and try to stab outwards with one of their four spear weapons, and then zoom away again. The only way to hit it without getting hurt is to use the Insta-shield as Sonic.