Here's Myca's reference sheet! I wasn't as happy with the way the anatomy turned out in the fullbodies on this one but I decided to upload it anyway because it's mostly for the purpose of correct markings and colors.
Myca lived in a post-apocalyptic world. Once he died, a sentient parasitic mushroom took over his brain and used his body as a vessel. The mushroom needs to do this to protect its own soft body from predators. It wears a raven skull on its head to protect it.