Nikolaus

Gender: Male

Family structure

　Father: Karstedt

　 Mother: Trudeliede (father's second wife)

　 Older half-brother: Eckhart

　 Older half-brother: Lamprecht

　 Older half-brother: Cornelius

　 Older half-sister: Rozemyne

　 Paternal relatives

　 Great-grandfather: Aub Ehrenfest (fifth generation)

　 Great-grandfather: former Giebe Leisegang (Bonifatius's first wife's father)

　 Grandfather: Bonifatius

　 Uncle: Traugott's father

　　　 Cousin: Traugott

Age related

　Grade difference with Rozemyne: -3

　 Birth season: other than winter

He has bright maroon hair and light blue eyes.