Claus Valca

Claus Valca (Κλαυς Βαλκα) (クラウス・ヴァルカ, ) is a fifteen-year-old vanship pilot working for the Norkia Vanship Organization. His navigator is Lavie Head, with whom he shares a deep friendship since early childhood. Claus is no stranger to the vanship courier lifestyle, having been born into and raised for the lifestyle by his late father Hamilcar Valca (much like navigator George Head raised daughter Lavie)[citation needed]. Their fathers died while attempting to cross the "Grand Stream" on a mission that would have brought peace to Prester. After this and his mother's death, Claus followed in his father's footsteps throughout his childhood and early adolescence to becomes a top-notch pilot.

While transporting their special "cargo", Alvis Hamilton, Claus and Lavie's vanship is damaged and they are forced to stay onbord the Silvana. The captain of the ship, Alex Rowe, had been the young pilot who delivered news of his father's death to his family. On top of that, he caught the eye of Dio Eraclea, who was fascinated with his skills as a vanship pilot. Though uncomfortable in his presence, Claus treats Dio as a friend.

As the events of the series unfold, the emphasis of the story began to shift away from Lavie and him, instead focusing on the plights of the two countries in Prester, and the treachery of the Guild. However, he and Lavie bore witness to Alvis's release of Exile, and in the end, chose to settle in the "new world" (Earth).

Claus' seiyū in the original Japanese version is Mayumi Asano. he is voiced by Johnny Yong Bosch in the English dubbed version.

Source: Wikipedia