Books similar to umbrella academy (or gives those vibes)

[Kaede]

I love the show Umbrella Academy (although season 4 was kinda a let down tbh) so I really want to read a book similar to it or books that give those vibes. So if you read books like that suggest them to me pls. I also want to read a book from like the killers perspective so instead of the protagonist trying to catch a killer, the main character is the killer. I think that would be cool.

[Kris]

Kaede, please assume that most people are not familiar with the series you mentioned, so we need a more general topic header that includes the genre(s) and type of characters, plot, etc. that you're looking for.

[Averi]

oooo, i also love that show. it's basically about a group of kids that were all born on the same day, and adopted by a rich guy that was training them to save the world