Alexander GranfernesAlexander is Regina's father, the king of Germany. He may care free but he do really cares for Regina deeply and trust Riki and Rinne to take good care of her.
Natalia GranfernesNatalia is Regina's older sister, they may not look the same because Natalia inherited her father's hair color while Regina inherited from her mother. Natalia may be bossy, Regina doesn't seem to be bother about it. Natalia loves her sister dearly.
Leonteus is Regina's father's cousin and also Ixion's father and Millay's uncle.
Archelaos is Regina's grandfather. He cares for Regina a lots.
Millay Shirley and Ixion L.Curtiss
Millay and Ixion may be Regina's cousin on her mother side distant or not.