The Batmaster...not inspired by Batman though it is understandable how one could draw that conclusion, but rather from the show "Hey Arthur" which featured a scary character they called the Batmaster. I stole the name and revamped the character as a hero. Batmaster is a Vampire who has what vampires call "Day Walker Syndrome". This is a fancy way of saying that he has never tasted adrenaline which is known to be highly addictive to vampires. The need for adrenaline is why vampires frighten their victims before feasting on their blood and is why vampires are so cruel there is no known cure for this additiction and it's hold is very nearly unbreakable.
Batmaster while still requiring blood to survive, only takes blood from willing victims, under the pretense of medical research. Multi-Billionaire Erik Vladamirov has lived for hundreds of years and seen many marvels from the invention of electricity to FTL travel through it all he has maintained his cover. Even when Vampires were unmasked before mankind he still managed to keep his terrible secret. During the millennium wars he felt compelled to help his galaxy combat the Sathari empire in the guise of the Batmaster which awakened in him an adventurous heroic spirit he never knew existed. Now disguised as the crime fighter Batmaster he prowls the night hunting Vampires and other threats to makind with his allies "The Scions of Justice".