Gadzooks looks a bit like a crab. It says in its descriptions it’s extra unstable, so I imagine it’s quite tender. If it does have a shell, crack it open and eat the softer insides. Yes, I believe it is somewhat edible. It is highly related to Yooreek, so I imagine there is actually flesh in there, even if you have to get through tough skin for it. Crack the outside open, cook it, and I imagine you could eat some fresh gadzooks like lobster. Overall, I think it could taste good with the right seasonings like any other meat product.