A clumsy assassin sent to kill King Krichevskoy, she ends up befriending Laharl and Etna.
Flonne is from Disgaea. She's an Angela Trainee from Celestia that was seen to assassinate King Krichevskoy who is the Overlord of the Netherworld. Ather finding out the Overlord died two years ago she devotes her time to trying to show his son (Prince Laharl) that demon's can be kind. Laharl disagrees and hates Flonne's loving ways.
At the end of the first game ( Makai Senki Disgaea: Hour of Darkness ), she becomes a fallen angel after she was turned into a flower by Seraph Lamington. This didn't seem to have any greater effect on her powers or her attitude. She has lived together with Etna and Laharl ever since.