Well, can it? [img]smile.gif[/img]

thoeritically, but they have good saving throws and are powerful so would be difficult to turn in the first place. I don't know if they have some innate protection

IIRC they are immune to turning, if you have a paladin, keldorn, Aerie, Anomen, Viconia and any other cleric you can find you can run into one and find out... would be an interesting, if short, encounter. (as a side note tehy are not immune to other things, such as the undead killing axe(get the baldurdash patch), or the mace of disruption)

Keldorn can't turn undead [img]tongue.gif[/img]

Keldorn is an inquisitor, so turning undead is not available to him.

First of all, Kangaxx the Demilich is a "half-undead". He should be undead but some anti-undead tools, like False Dawn do not work against him. Turning Undead need not work against him, too. I don't know.
Second, Kangaxx the Demilich is a level 27 creature. Your turning abilities depends on the level of the undead to be turned. It is not correct that your level should be higher than the level of your victim but, in my experience, your level must be at least near the level of your victim. Therefore, you should be level 25 or so if you want to turn Kangaxx.
Note: Kangaxx the Lich is also level 27. If you suceed to turn Kangaxx the Lich then you can think of turning Kangaxx the Demilich. Again, you can fail even if you should be successful. Turning undead need not work against the Demilich.