If you need specific "supernatural" or dynamic action poses, these digital platforms are often more versatile than a static book: Super Pose Book 3
Instead, consider these for free supernatural/natural poses: super natural pose book download free
Sometimes a 2D book isn't enough. Sketchfab allows you to view 3D models in supernatural poses. You can rotate the camera to see the anatomy from every angle—something a static PDF cannot offer. How to Effectively Use a Pose Book If you need specific "supernatural" or dynamic action