Odysseus eu Britannia is the First Prince of the Britannian Imperial Family.
His mother is Arianna eu Britannia. Though in theory he is the Crown Prince and first
in line to succeed the throne, his performance in many areas is quite plebeian compared
to that of his younger brother, Second Prince Schneizel. He also appears to be fairly
indecisive, as he is unable to figure out what to do in the face of the Black Knights'
open rebellion in Area 11; Schneizel eventually has to step forward and volunteer to
aid Cornelia's forces.
In the second season, he is engaged to Tianzi, the much younger Empress of the Chinese
Federation, in a marriage of political convenience orchestrated by Schneizel in order to
peacefully seize the Federation's territory. When the marriage fails as a result of a coup
d'etat instigated by Li Xingke and furthered by the Black Knights, Odysseus does not mind
and is not offended by the broken engagement; instead, he shows more concern regarding
the continuing war with the E.U. and is reluctant to begin hostilities with the Chinese
Federation while engaging in the E.U. campaign. At first when Lelouch calls himself the
new emperor, Odysseus believes it to be a prank, and still believes it to be even after
Lelouch states he killed the previous emperor. Lelouch uses his Geass to compel Odysseus,
along with the rest of the royal court, to accept him as the new emperor. Afterwards,
he is recruited into the Britannian military as a regular foot soldier.