ジェレミア・ゴットバルト

Jeremiah Gottwald is an elite Knightmare Frame pilot deeply concerned with the maintenance of Purist supremacy within Britannian society. He is somewhat overconfident and passionate about furthering his goals, both qualities that tend to make him rash and impulsive in battle. He was formerly a part of Empress Marianne's guard, and he is deeply affected after failing to stop her assassination. 

Jeremiah is further disgraced after failing to get Kururugi Suzaku to his trial when Lelouch, as Zero, uses his Geass to compel Jeremiah to help them escape and even mocks him with a meaningless reference to the color orange. This leads to his demotion and even an attempted assassination by his own men (only to be saved by Suzaku and Euphemia), and eventually causing him to believe that killing Zero will restore his honor. His impatient and impulsive action when trying to find Zero leads to his quick defeat at the hands of Kallen Stadtfeld, who has recently acquired the Guren Mk-II, when he tries to fight Zero at the Battle of Narita. 

He is officially listed as killed in action after this because everything suggesting otherwise was lost along with his Knightmare's signal. In reality, Jeremiah manages to escape and staggers on to the street, where he is found by scientists. Jeremiah is subjected to a number of experiments by the scientists, now under Prince Schneizel's patronage, who enhance his body with various cybernetic devices, such as a neural interface and a cybernetic left eye. The latter also comes with the Geass Canceler, a blue, inverted form of the Geass with about the same capabilities as Rolo's Geass that nullifies any effects done onto a person by the Geass, thereby making them able to experience Geass again but also allowing them to no longer feel its previous effects.

As the Black Knights take over of China is nearly complete, Jeremiah is sent to Japan by V.V. to eliminate Lelouch. However, while confronting Lelouch in a train station and resisting the Gefjun Disturber trap laid out for him, Jeremiah reveals he had a hidden motive for coming, demanding to know the reason why Lelouch became Zero and betrayed their people. When Lelouch reveals his true name and intent to avenge his mother's death, Jeremiah swears his loyalty to Lelouch in order to redeem his failure to protect Marianne by revealing the location of the Geass Order and aiding in its destruction. In the end, he assists in the Zero Requiem and retires as, ironically, a content orange farmer along with Anya./ 

From url=https://en.wikipedia.org/wiki/List_of_Code_Geass_characters#Britannian_Army.