Bio Engineer Archive

With Bio creatures, can anyone use them? What I mean is that can anyone get a Bio created creature, have it mounted, and then pull it out and ride it? Or do you have to be a certain level CH or BE to use Bio creatures? I'm just a Novice CH looking to buy Bio creatures for my mounts. Anyone answering the questions and are selling Bio creatures that I can use, please respond and let me know. Thanks!

If you are just a novice CH then you still can only use the non-ch types such as the Carrian Spat and Kaadu