Alphabetic order:
Astarion - I tended to kill him immediatelly after he deceived me and tried to backstab me. Having him in my party made my opinion go from bad to worse. Cheating, lying sadist. Chaotic Evil.
Gale - my opinion of the arrogant academic actually improved the longer I had him in the party, Neutral Good, I'm surprised to say.
Karlach - a young criminal made into a slave soldier, mental age - 15. Chaotic Neutral
Lae'zel - insuferable racist bitch, no change. Lawful Evil
Shadowheart - whining voice does her no favours. A psycho, two peas to a pod with batnose. No change. Neutral Evil
Wyll - pass. Boring. The last-gasp rewrite leaves holes the size of Bahamut or Tiamat in his story