I beleive with a "please don't be silly with this" that goes assumed at all my games, (i make sure to say it to new players so it's only assumed after day 1) that it's fairly balanced. But then my group thinks the monks pretty cool, the leasership fet should be in every game, and wizards are weak (they like rushing in and hitting things.)

If you really want to check this i'd say build it to fight a wizard and build a wizard to fight it at a few different levels, do the same with a barbarian, cleric, druid, and something that could get silly like a spell thief.

also, this is the new hench person for the BBEG in my game.