John Falsworth first appears in the title Invaders as an English aristocrat. Although posing as the son of the first John Falsworth, it is revealed in flashback that the character is in fact the original, made possible due to the fact that he is now an ageless vampire. When the family fortune is left to older brother James, John Falsworth leaves England to pursue an interest - vampire lore. Falsworth travels to Transylvania and encounters the original vampire Dracula, who, after overpowering Falsworth, drains his blood and turns him into one of the undead. Dracula then commands Falsworth to return to England and cause havoc in revenge for the deeds of former opponent Jonathan Harker. Adopting the alias of "Baron Blood," the character allies with Germany during World War I and without either party realizing the identity of the other, battles his own brother, who is now the English hero Union Jack. Blood is wounded by Jack with a silver dagger, and flees to recover.