Boot your tank because the King should never be right in the middle of anything going on.
Uhh, that's where the King spawns. Not to mention the fact that the King is targetable about 8 seconds before the rest of the moogles are + 5 of the 7 lesser moogles cannot be tanked and hang out in the middle for a few moments more after they are targetable, so he practically begs to get AoE precasted on.

Have you ever actually done this fight?