This is a test of some concepts for animating Rob Lerner for our title sequence. I'm not 100% happy with any of these, but there's some interesting effects.

The "wiggle" effect is created by using two separate animated Freestyle settings and switching between them in the Blender compositor by using a Time input node and a Modulo math filter node.

The effects are standard Freestyle geometry modifiers: Backbone Stretcher, Sinus Displacement, and Spatial Noise, and then toning down the amplitude of the effects.

Finally, there's another alternative, which is to go back to the concept art portrait, but use Synfig to animate the shot.