1) When one summons the Krashin Barbarian, is he an actual barbarian, an ancestrial spirit type with a "soul" or a magical construct in nature?
2) In the event that he's a magical construct, will he still have a personality of a barbarian, being able to battlecry, rage and drink and such, or is he more like an unfeeling automaton like a golem? Will getting him drunk make him "happy"?
3) Will it be considered an evil act to summon the demon with the Abyssal Sounding horn as far as good folks with Use Magic Device is concerned? In other words, would a good cleric with Use Magic Device points possibly lose their status with their deity for using it? How about if the demon was summoned specifically to do restitution for his bad deeds, like picking up litter or being made to sit there and listen to a Toranite sermon?
4) When the demon is done being summoned, does he go back to his abyssal plane with free will again, to plot against the owner of the horn for suffering his indignities, or is he specifically bound to that horn and vicariously its owner as well? Does the horn grab the same demon over and over, or does it work like other summoning spells in which it's assumed that it merely grabs the closest demon?