Quote Originally Posted by 137ben View Post
@above: the pit fiend is also somewhat...big.
The Pit Fiend is Large, but that is within the acceptable size range that has been established for the MitD.

The problem as far as I see is that it is an outsider from the lower planes and that Rich's comments (W&XPs) seem to indicate that morality plane creatures cannot change alignments more than slightly. Not having been brought up on the lower planes might account for the more neutral disposition of the MitD (good still requires commitment) but it does require some hand waving.

Still, IMO having access to wish (as well as greater teleport) as a spell-like ability, good strength and defenses, and several knowledge skills makes it a great candidate without us having to template it.