Here is a breakdown of the lighting passes for the final animation
Initial Key light, with the stripes on it to make the window-ey blinds effect. (The only light casting shadows)
A Fill light so that you can still see somewhat in the dark stripes.
A Fill light to the side, to keep him from looking like he's coming out of the darkness.
A Back Fill light to create a partial Rim Light and to fake bounce that might come from his surroundings.
Cooled off the left side of his face in After Effects.
Added another Rim light in After Effects.
All the lights broken down in a video
The final product
As I said before this was a lot of fun to do, I learned a tremendous amount about rigging and subtle animation and I'm looking forward to applying those newfound learnings into my next projects.