Eliwyne wants a life of adventure, and by adventure she means be safe and cozy in the countryside as opposed to a bustling High Elf city. If her company is pleasant enough maybe she'll decide to stay.

Balifor is tired of the Nine Hells. He wants to toy around on the mortal plane for a while. Help him will you?

Hilda is a knight disgraced for attacking the man who raised her to knighthood. She wants to redeem herself.

Like all demons Lilyss would rather torment mortals than be tormented in the Nine Hells. She knows what she's doing and what she wants, and isn't too concerned how she gets it.