Furfur held the book with Aziraphale's name, as he was doing his thing. Crowley and Aziraphale stands there, silently. (Your character is anywhere in the area)

Furfur: Fell the Marvelous, aka...

...

Furfur: Azirapapalala.... Azirapapapa.... Aziphapalala.

Aziraphale: he sighs Aziraphale.

Your character can be friends, frienemies, or enemies with whoever, and the rest of info is yours to make.