I think Rock is actually my favourite character so far, despite him not being a primary main character. I'm hoping I can learn more about the Horneater Peaks and how they have come to see and revere Spren the way they do!
I was not at all keen on Shallan at first, but I warmed to her slowly. I love the Kholin brothers, Adolin and Renarin, and of course the commmanding Jasnah.