Again, coinciding with First Second Books' Vampire Month, here's the next in our alphabet of comic book vampires!
In a series known for its great characters, Proinsias Cassidy was probably the greatest character out of all the ones Garth Ennis and Steve Dillon introduced in the pages of Preacher.
Besides the whole fun-loving nature of a wacky Irish vampire, what makes Cassidy stand out is how he managed to maintain two vastly different personalities - the one that he showed to Jesse Custer, and the one he displayed when he did not have Jesse around to rein him in.
Cassidy was an honorable vampire, someone who would not hurt innocent people and who allowed himself to be captured and tortured rather than letting his friend Jesse be harmed.
But Cassidy was also a jerk who abused the women in his life, nearly tearing the jaw off a girlfriend of his with a punch (due to his vampiric strength), and when he thought Jesse was dead, he used drugs and alcohol to get Jesse's girlfriend, Tulip, to be with him.
Cassidy was also a great source of a "unreliable narrator," as when we learn of his past, in an amusing and heartfelt tale of a young patriotic Irish lad joining the Easter Rebellion but ending up a vampire instead.
However, we later learn that he left out a lot of bad stuff he did during the years when he was addicted to all sorts of drugs.
Finally, when Ennis concluded the series, it was just as much Cassidy's ending as it was Jesse, the titular character of the book.
When/if the HBO series is made, I hope the character will be half as interesting as he was in the comic books - if so, he'd be one of the best characters on television.