Blacula (1972)

Blacula is a fun and intriguing mash up of Blaxploitation and horror, with a dignified turn from William Marshall as the title character.

Marshall plays an 18th century African prince named Mamuwalde. He wants to bring his kingdom into the modern world, and, for some reason, turns to Count Dracula for help. Unsurprisingly, it does not go well, and instead of opening up global markets, Dracula opens up the veins in Mamuwalde's neck, seals him up in a coffin and leaves his wife Luva to die. Cut to the 1970s, and two interior decorators who are expanding their US property portfolio to include Transylvania. They unwittingly resurrect Mamuwalde after bringing him back to the US, leaving him free to pursue a woman he thinks is the reincarnation of his late wife.

This is cheap but cheesy fun and there has been some thought gone into the script.
 
The original Dracula story had the Van Helsing character to act as the counterpoint to Dracula (and exposition point for the audience). Wisely, Dr. Gordon Thomas (Thalmus Rasulala) plays that role here.

What is especially interesting is that all the main characters are black, and the producers made no attempt to introduce any kind of white saviour character.

The real star is William Marshall whose natural charisma manages to inject some dignity into the part of Mamuwalde, and make him a tragic rather than horrific character.