I'm trying to replicate the walk animation in the save file I've uploaded, and I've noticed that none of the deform (red) or helper (blue) bones have been keyframed, only the controller (green) bones. However, when I try to do it this way, I can't. Not without keyframing the blue helper bones. For example: I set my keyframes for the fingers at the start (frame 0) to frame 8, and then move the fingers using the helper bones from 8 to 16. When I keyframe them though, the fingers stay in that position, even if I scrub back to the start.
Does anyone know how the animator could have got that to work without keyframing the helper bones?