Never understood the hype surrounding the guy. I don't think I ever completed the game with the guy since I have severe doubts about his worth:
- Yes, he has the 20 constitution and, as a result, high hit points. However, they are not THAT much higher than a, for example, high level Khalid.
- He has not one, but TWO fighter-relevant stats that suck. His dex is terrible, and his strength is weak as well. All the other pure fighter-class npcs have onle one Stat that sucks (Ajantis dex, Kivan con, Dorn con, Khalid strength). That means that he would need both dex AND strength support, things that many other npcs need as well.
- His axe proficiency is also not ideal, you don't get a +2 axe until baldur's gate, and this axe is weaker than, for example, Varscona, which you can get more or less from the start.
- For these reasons, I don't understand why he constantly gets picked as the best fighter. I personally think that Khalid is MUCH more efficient than Kagain. Now, I am not saying that he is useless, he can be a very efficient character with the right gear, as can be every npc. Just don't get why people praise him so much.