Gale, and quite recently, Wyll. I love his line delivery. I also believe both these characters have the best facial animations which brings even more life to their voices
I don't really like Astarions, but then, i'm over the "pompous flamboyant elf" trope. It's overdone at this point even in Elder Scrolls.
And the broody vampire trope too.
I agree, I do like Wylls voice actor. He isn't my favorite character, but the va does a very decent job.
It's not even just that, it's that all his lines usually are delivered in the very same way. The others convey different emotions very well. Gale, Wyll, Shadowheart. You feel it when they're angry, disapointed, sad. Hell Gale has one of the best line deliveries in the game after he gets upset that you sided with goblins. They all nail everything, and Astarion he never not sounds exactly the same. Almost like his character is constantly trying to be a parody, and can't get away from the usual shtick even when he tries. Even when he's supposed to be sad I just can't take the scene seriously lmao.