Good ideas, all!
I think Cadmus, Theseus, and other demigods (in the traditional sense of being children of gods and mortals) are likely candidates.
I am not at all convinced Drakul is a dragon, as the only evidence for that is that is an interpretation of his name (not even necessarily the most correct one). IF we want to delve into Drakul's origins in that sense we should start another thread.
I think we need to look at famous characters (both historically and legendary).
I doubt Drakul sets himself up as a ruler very often, Jim says he often just works with a small team. So less Atilla the Hun and more Jack the Ripper etc.
I suspect the same applies to Odin although perhaps not quite as much flying below the radar. Beowulf, Galahad/Lancelot/another Knight/warrior, Cu Culchain (as Con said), St George is a good one as Vadderung is also St Nick etc.
These are some of my guesses -
Drakul: Jack the Ripper, Procrustes the Stretcher, Peter Niers, Christman Genipperteinga.
Odin: Beowulf, Knight of the Round Table, Theseus, Siegfried, Cu Culchlain.