But Harry helped him survive the encounter with Drakul and his bunch, which is one of the reasons why blaming Harry for so many deaths irks me so much.
He did, but Carlos is a proud man, he may be even just a bit jealous. Harry admits that Carlos is better at many forms of magic than he is. Here's Carlos, yes, his body will heal, he is a wizard, but for the most part for now at any rate, he is pretty much stuck in a thankless job. Yeah, he might be the North American Commander, but Luccio holds the strings. Then there is Harry who seems to be the hero at almost every turn, and to add insult to injury he skipped a grade when he became a full wizard at 16. So while Harry and Carlos seemed to be friends, if you scratched the surface, Carlos also has a lot to resent as far as Harry goes.