Spying Antics

requested this a little while back (and named it just now). I decided to do it in traditional media for two reasons:
1) because I actually have traditional materials to work with 
and
2) my tablet is falling into obsolescence (read: the driver keeps failing and I can't find the appropriate replacement driver on Wacom's website anymore) after a lovely 7-year career and I'm trying to save it for commissions until I can afford a new one and officially let this one retire.

The characters featured here are