Kay, so I know I'll probably make a few enemies, but I don't actually like Nico. He just doesn't seem... Right to me. We have, in my opinion, very little backstory on him. In BoO, we even get a view of his perspective, but he still doesn't give us much backstory. I feel as though I know more about characters that have been in WAAAY fewer books than him. Alex Fierro, for example. We know a bunch about his/her's heritage, family, and altogether backstory. We know way more about him/her than Nico, and Alex is only in 2 books, THoT and TSotD. Nico has been in most of the books since TTC. Let me know what you think about this.