Has anyone else noticed that Esbern seems to have multiple voice actors? One sentence he will sound completely different from the next. It seems like they have people trying to imitate Max Von Sydow for some of his dialogue. Or am I just going crazy?

Remember to pop [SPOILER] in the topic title; some people haven't made it as far as this fellow you speak of.

I, too, have noted this sudden 'personality change'. But from the list of vocal actors, he is just the one person.