I actually agree with you. In reading the books, Cersei was the only character I pictured entirely different than the one I saw in the show. Cersei is supposed to be one of, if not the most, beautiful ones in the known world, but she has a nasty streak and great cunning. I just don't see t hat with Lena.
I'd say I picture several characters differently in the books than they're presented in the show:
Catelyn (she's supposed to be much hotter)
Tyrion (although I picture his voice being identical for sure)
Mace Tyrell (hasn't been introduced yet, but they've cast the ugliest actor possible for him).
Honestly the only actors I think are irreplaceably perfect are Ned, Varys, Arya, Tywin, and Jaime.
This post was edited on 10/24 at 10:23 pm