Question about dominate person

[Macgreine]

If the party is attacking the BBEG and he casts dominate person on the Barb and said barb fails the will save, the BBEG commands the barb to come to his side and protect him.

What happens next?

Would this be considered to be "forced to take an action against his nature?"

If so having just failed a save would he be immediately make another?

And then would he have to take one every round?

Thanks for any help with this.

PS Barb is N if that matters.

[Baku Shadescar]

It's variable. Really depends on the character.

You just get one additional save (and at +2). If that fails, there aren't additional saves. You're just a thrall.

[LazarX]

That barbarian is HIS from now on... That's why Dominate Person is an 5th level spell.

The barbarian gets a new save any time he's forced to do something that's against his nature..... such as attacking his friends.

[Lakesidefantasy]

I would give him another save for being commanded to attack his companions. Then again, I might just command him to go into the other room and clean his axe, his sword, his dagger and anything other weapons he has.