Astarion - My first impressions of him was that he was a colossal douche.
After spending more time with him... I still think he's a colossal douche. But I understand that his circumstances understandably lead to him being a colossal douche and can't really hold it against him. Doesn't mean I like him though.

Gale - My first impressions of him was that he was a lovable, friendly guy who's easy to get along with.
After spending more time with him, I realize he's a colossal douche. Narcassistic af and has little regard for others. He puts on a nice act, but all his problems are caused by the fact that he doesn't care about anything but his own whims. He'll also make moves on you while pining over his ex-lover (That dumped him because he was a colossal douche and ignored her, despite also being a literal goddess)

Halsin - My first impressions of him was that he was boring and lame.
After spending more time with him... I haven't been able to find anything out because I fall asleep to his boring and lameness

Jaheira - My first impressions of her was that she was overhyped.
After spending more time with her... I still don't get the appeal. Nothing about her really came across as noteworthy. Her existence mostly felt like just "Haha remember this character"

Karlach - My first impressions of her was that she was kind of fun, but was hiding a troubled past.
After spending more time with her, I realize that yes, she is fun. Her troubled past is pretty significant, but she doesn't let it hold her back. She knows she made mistakes and has learned from them. Also, Gortash can go die in a fire.

Lae'zel - My first impressions of her was that she was a hard ass and very selfish.
After spending more time with her, I realize she's actually a bit of a softie at heart. She naturally cares for others and can be cute. She however is fighting against her nurture in which Gith are raised to be cold, selfish and xenophobic.

Minsc - My first impressions of him was that he exists.
After spending no time with him, I can confirm, he does definitely exist.

Minthara - My first impressions of her was that she makes a good corpse.
After spending more time with her, I still agree she makes a good corpse. Her casual outfit is cute on Shadowheart too.

Shadowheart - My first impressions of her was that she was a bit curt and prickly, but showed signs of a softer center.
After spending more time with her, I realize that yes she's actually a total sweetheart. She has just sadly been corrupted by her past. Though the good news is we can undo that and bring her actual self out to flourish.

Wyll - My first impressions of him was that he was an annoying goody-two-shoes.
After spending more time with him, I feel like he's just a whiny crybaby. Since every time I try to talk to him he's just whining about Mizora.