Dragons play an important part in the Heterodyne Story and come in many sizes and flavors.
Franz is a sleepy dragon who watches over the Heterodyne treasure hoard.
Then there is the "Pretty Boy" dragon, actual name Lord Floriel Flametongue, who seems to be the drake equivalent of Othar. From the novels we learn that back in the day of the Storm King the Heterodynes used dragon skull drums. Apparently they had dealt with the dragons before encountering the Storm King. General Zog recognized Pretty Boy as one of those dragons. He deemed them troublesome.