if you have cheats enabled, you can make boo in your party. i've tried this, and i love boo! however, like most cheated npcs, he doesnt rly have a class (fighter, mage, etc.). but for some reason, he can level up.

when i try to level him up, the game crashes. is it possible for someone (me, black isle, whoever) to let boo level up? i know having boo is cheating, but it makes the game a hell of a lot funnier! (like wen boo kicks a dragon sqarely in the arse from 20 feet below)

You're not supposed to level him up. Leave him as he is.

For some strange reason I find the perspective of having someone named Boo as a party member terrifying :D :shake: :D

Use Shadowkeeper and make him whatever class you want, though I would recommend Fighter/Thief. It should work...