Swartzwalders

The term Swartzwalders has not yet appeared in the Girl Genius "canon", but it is reasonable to speculate that Füst is one of these creatures.

The Works
Swartzwalders - Constructs is a card in The Works which depicts somewhat dopey-looking bearlike bipedal creatures wearing primitive jewelry and carrying (somewhat less primitive) polearms.

Possibly Relevant Outside Information
"Schwartzwald" is the German word meaning, literally, "Black Forest", which is the source of the Danube in Southwestern Germany. "Swartzwalders" may be intended to mean, merely, "denizens of the Black Forest".