Because they both think waaayyy to highly of themselves. I don't like people who think that they're better than someone else (or everyone else) when in reality, they're not. They're also not very nice to Skul-man and Val. Also, Crux blackmailed China to force her into cooperation (yeaaaaaaa that went well). Also, Guild, because he's just a really unpleasant man. And Crux, because of his stupid pointy beard thing.
There's alot of people i hate in this book....first , i straight up hate Valkyrie. She's so stuck up and thinks she can do anything she wants without any help. She thinks that she can do EVERYTHING. I like Skulduggery alot, but i dont like when he supports Valkyrie. Like when she dumped Fletcher (i really liked him) Skulduggery was like whatever, its your decision. I wouldve punched her for breaking his heart. I also Hate sanguine, because he was crushing on Tanith, and was a jerk to Ghasty.