Fuck this.
Here's the thing. The Passage novel was the rare high profile epic novel that needed no "diversity" push when casting for a movie or series. The book was full of interesting, important, major characters who were not white. And the stupid TV show screwed all of that up.
Let me start off that the book, in the story part that takes place 100 years in the future, had numerous Asian characters who were key to the plot. But it's greatest diversity was its black characters. In the present day you had the black hun who becomes a sort of mother figure for Amy. She's a key character who shows up in the following novels. And you had the black guy on death row who has such a great arc throughout the series and plays such a important part in the two conflict.
Even better though are the black characters in the future, in particular Peter and his brother. Both are well-realized individuals who have an interesting and loving relationship. They both also have strong love lives and connections with women who aren't black. Peter is arguably the lead protagonist of the story once we make the jump to the future. Peter is part of the Jaxton family, one of the leading clans of the society in this dystopian future. He and his bro are trying to live up to their father's name, a black male and semi-legendary figure who disappeared on a expedition years ago. Peter shares his best moments with Any and particular the fiery redhead Alicia Donadio, my favorite character of the story and arguably the best warrior of this future colony of survivors. They have such a fantastic bond and you can tell beneath the surface Peter and Alicia have feelings for one another. But there is another great leading character, a woman named Sara, who is in complete love with Peter but he doesn't return those feelings, mostly be seems oblivious to her affection for him.
Peter and his brother Theo have an old aunt that lives in the colony. And the author bridges the present storyline with the future one by devoting a large section to her and her parents in Philadelphia years after the Amy and Wolgast storyline has wrapped up, when society is making its final last stand against these vampires. The aunt is a little girl around this time and she has a tragic story in which she and other children are put on a special train just before Philly falls. One of the children travelling with her is a male cousin of hers. So let me stop and point out that this book is giving us the nun Sister Lacey, Lucious Greer, the black inmate/death row guy who becomes one of the original Twelve, Peter Jaxton, Theo Jaxton, their aunt, the parents of that aunt when she was a kid and her slightly older male cousin. So why in the world did we need th TV showrunners to make Amy black as well? The book was inclusive enough already. That casting screwed with the image is book readers had of Amy, the pale girl nose image alone was promoted in advertisements for the first novel. I can't stand racebend csting, particularly because it mostly means changing white female characters into black females (as if black women are the only poor of color in need of a diversity casting push).
Anyway the future story of the colony is easily the strongest part of the book because the world building is so tremendous. And the characters of this future world, shaped by the society they were born into, are far more interesting than Wolgast and Amy. When Amy shows up she helps them survive because of her super powers and knowledge but she takes a backseat most times to the other characters. Wolgast is not around. The show though wanted to bring Wolgast into the future story and keep him a the center of the action. Thank God it got cancelled before they went there.