Unknown Armies: Bring Me the Head of the Comte de Saint-Germain: GMCs

Just gearing up to run Bring me the Head... but I'm lacking stats for Chirp and Roger. Has anyone put together sheets for them?

It's also looking likely that I'll only have four players. Does anyone have any advice on which characters can be removed or used as GMCs without too much of a problem? Are any adjustments required as a result of this?