Chilopod

An insectoid alien that rolls around at high speeds.

Codex Description
"Pick your moments with these ones. They might not seem particularly threatening at first, but if you're not careful they can easily catch you unawares. Then, before you know it, an angry ball of alien bug parts is careening towards you. At that point there's not much you can do to stop them until they get tired and unfurl. Unless you have a handy cliff edge nearby, anyway,"