I have a kensai in ToB, which i haven't dualclased, and now, he has an armor class of 0, and he is hit by almost every thing that is thrown at him. So I have to cary around A LOT of potions and have two healers near. I'm just wondering, if there is some way to litle improve his AC, in ToB (possible without cheating).

if you want a so powerful its almost cheesy method, dual him into a theif and use the use any item high level ability

it overrides the item restrictions from being a kensai, so youll be able to wear plate armor and such things

The ring of gaxx is good when paired with the improved cloak of protection.Assuming that your Dex is 18 you have AC6.
With the Kensai bonus AC4
With ring of Gaxx and Cloak AC 0 (oops)
There is also wong fei's iun stone that gives +1 to ac,regeneration and +15 hps...

Thanx!
I'll try the thief trick, becouse I haven't been able to kill the demi-lich in the SoA.

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Big metal unit is waiting for you. Your AC goes rock buttom if dualled into a theif. Low AC is needed in ToB.

Demi-lich in the SoA. Easy battle my friend. Just use the right tactic.

If you mind the thing some dwarf (or was it gnome) in Amkethran, make for you from some underwear I had it, and the thing is the only armor that work on kensai, well I got that, but I don use it, becouse it is a bit to strong. Anyway thanx for the help but I don't need it any more becouse I have just killed Amelissan with my Kensai.