Arendt Keller is a swordsman and duelist of House Battalia. is the son of Bernholdt Battalia.
In the events leading up to Tournament Primavera he met with Celestina at one of her fortune telling tents, where it was foretold by Celestina that a great victory was at hand for him. Acting on this information, he entered and competed in the tournament.
It is speculated that the relationship between Arendt and his father Bernholdt is tenuous.
Arendt attended the premier showing of the Fall of Stars at the request of Prince Cipriano.
