The blue princess is one of the characters having her own ES.
It can be used by KOS-MOS during the battle, she is the pilot of it. Generally Shion is her co-pilot.
It has very good capacity and equilibred stats in battle.
In cutscene, this ES piloted by KOS-MOS could anihilate a whole enemy fleet of small ship and even lead to leave another ES, not wanting take the risk to be touched by it.
The ES can be combined with KOS-MOS motorbike.
This ES like all others has a Vessel of Anima, having some good skills.
This ES appears for first time, like most ES, in Xenosaga II and also the III :
It is stolen by Shion and Allen in Xenosaga II in order to go on Miltia. When they are attacked, KOS-MOS joins them and awakes its true power.
She merge Dinah and the Motorbike while having blue eyes, and unleash amazing attacks. After this, the ES is used during ES battle during the whole game.
In Xenosaga III Dinah is first offered to Shion as present when she left Vector. KOS-MOS re finds her place of true pilot when she joins the team.
It is to note that Zaratustra, having taken part of each ES at the end, will take Dinah's head for its own head.
