Night Crawler

A rare creature you'll only get to see if you recruit Avy. She brings one named Familiar with her, which has a couple of unique skills not found on other Night Crawlers. One of them is needed in order to achieve its evolution to a PortalRipper, which will mean you will no longer have a Night Crawler, but it will give you access to her homeworld where you can tame wild Night Crawlers.

Regular Night Crawlers aren't really worth the effort however, with average stats and a small pool of potential skills.