TV-Series
Description
Karstedt commands Ehrenfest's Knight's Order as archknight, presenting as a stocky older man with reddish-brown hair whose movements reflect precision from extensive combat training. Born Bonifatius's son, he stands as cousin to Archduke Sylvester and Ferdinand. Initially raised an archduke candidate amid Ehrenfest's lack of male heirs, he competed against Lady Georgine for succession until Sylvester's birth prompted his demotion to archnoble before completing the Archduke Candidate Course at the Royal Academy.

He married three times: first to Elvira, an archnoble of the Leisegang faction, fathering sons Eckhart, Lamprecht, and Cornelius; second to Trudeliede of the Veronica faction, bearing son Nikolaus; third to Rozemary, a mednoble he deeply loved, whose death from harassment by other wives strained household dynamics. Later, he became noble baptismal father to Rozemyne, adopting her formally with Elvira after her commoner origins required noble standing.

As Knight Commander, he protects the archduke and family, leads trombe exterminations, polices nobles, and oversees border security. Subordinates under his command once failed to guard Myne during a trombe incident, causing her injury and resulting in his reduced pay and financial penalties for her ceremonial robes. He coordinated with Ferdinand to investigate conspiracies involving nobles like Giebe Gerlach and former High Priest Bezewanst.

Karstedt joined Spring Prayer, demonstrating skilled sword dancing and deploying rainbow-colored magic against attackers. He aided in quelling an assault on the temple during the Archduke Conference, securing Rozemyne's safety while finalizing her adoption. His leadership extended to restructuring the Knight's Order under Bonifatius's oversight, integrating physical weapon training after discovering traitors' anti-magic fabric.

Magically, he commands a griffon-shaped highbeast and retains high mana capacity as a former archduke candidate. He learned Rozemyne's Water Gun spell but contends with its mana intensity. Non-magically, he exhibits exceptional swordsmanship, executing joint attacks with Ferdinand against threats like the Lord of Winter, and maintains flute proficiency.

Honorable, reliable, and protective, he treats Rozemyne as family despite her origins. He avoids political factions yet upholds justice, accepting blame for subordinates' failures. Trust in Ferdinand drives his support for Rozemyne's adoption and temple initiatives, though he initially wrestled with temple biases. Later, he coordinated with Ferdinand against factional threats and sustained protective duties during upheavals like the Veronica faction purge.

His relationships feature loyalty to Sylvester, camaraderie with Ferdinand, and tense ties with wives following Rozemary's death. He mentors his knight sons and oversees apprentice guards like Cornelius assigned to Rozemyne. Paternal concern for Rozemyne evolves as he monitors her welfare through guard Brigitte's reports.