Lyar von Ertiana  

Ertianas is a talented commander and pilot from Germany who aims to get married by age 30, despite being 29 with no prospects at present. She leads Seraphim and supervises new cadets, but there are rumors that she will be promoted to Lieutenant Commander and transferred out to command headquarters so her experience can be put to better use. This means the four cadets are reportedly being trained as candidates to replace her. In Tragedy of Cherubim, Lyar is eventually promoted, but continues to serve on Watchers Nest. She dislikes LeBlanc and suspects that he knows more about extratemporal monsters called Ghoul than he lets on.