After inadvertantly ingesting a serum derived from bats that gave him extraordinary abilities, scientist Dracula (first name unknown) uses those talents to defeat a nuclear terrorist using his family's castle as a base of operations.
Writer Don Segall and artists Bill Fraccio and Tony Tallarico took a somewhat more serious approach to this origin from Dell's Dracula #2 (1966) as opposed to their work on the Frankenstein SuperHero, which was "campy" from the beginning.
Keep in mind I said "somewhat", and that the tone began to radically-shift to camp as of the next issue!
Dracula will return shortly, but next up is the super-spy based on The WolfMan...also by the same creative team of Segall, Fraccio and Tallarico!