An specifycal reason is because is inspired by Peter Cushing!
A great actor from the B movies of 70´S and part of the 80´s... The ironycal is He was antagonic of Christopher Lee( Count D´ukku- Sorry for the horrorgraphy - ) The character of C. Lee died in the episode 3... But cronologicaly right is after that( In the moovies ) character of Petter Cushing died in the episode 4. That is the ironic... The character of both are relationated by starwars... But still C. Lee is healthy and live at the moment... Meanwhile Peter Cushing died in the 4 starwars episode and some years later before His "rival" died likes Lord Tyranus in starwars episode 3.
In You tube You can find the film "Terror express" where both actors participated... Meanwhile in another pictures Cushing interpreated Von Helsing and Lee interprated Dracula... Really interesting this image!