I’ve searched extensively for the answer to this question - and watched PepeLand’s Grease Pencil/Bendy Bones video many times - even in slow motion and frame by frame - hoping to see this technique.
In my own experiments, I’ve been able to “Parent” a Grease Pencil Layer to an Armature (with several bones) and to a single bone. However, no distortion takes place when “Posing” a Bendy Bone armature chain - only the Root Bone seems to affect the movement of the Grease Pencil shape, as a whole.
I’m using the latest release candidate (2) for Blender 2.78
Can anyone provide the technique or the settings for getting the kind of Bendy Bone distortion that is demonstrated in PepeLand’s video?