I think Von Stalhein wore a monocle, was really fast, and excellent at close quarters. In one book - "Biggles Flies East" - he disguises his physical abilities by carrying a walking stick, and deliberately walking with a very pronounced limp.
Perhaps, one of these monocle-wearing chaps might do:
Copplestone - German Mercenaries set

Pulp Figures - Zeppelin Crew set
