These are the tools Vicious Cycle's animators use for building most of their current character rigs. I'm not an animator, but I write auto-rig tools for animators with the features they've asked for over the years. The code is my own, but the ideas were initially based on the work of Ben Cloward, and much later, Paul Neal. Much guidance was given by animators Paul Buda, Drew Walton, Gabriel Smith, Jeremy Riccione, David Lamb, Joel Finney and others.