Suzaku is a prime example of an Honorary Britannian.
An Honorary Britannian is a citizen of the Holy Britannian Empire who is not of ethnic Britannian descent, and so has vowed loyalty to the Empire to gain citizenship. All non-Britannians living in Britannia-conquered areas are allowed to accept honorary Britannian citizenship. Honorary Britannians are legally almost identical to Ethnic Britannians, but are not free from discrimination. Those living in an Area who do not accept Honorary citizenship are barred from living in the wealthy Britannian colonial cities, and so are often consigned to live in a ghetto.
Honorary Britannians are sometimes employed by the Britannian Army as separate divisions, and are usually employed for menial warfare such as hunting down rebels in less favorable conditions, The Blood-Purist Faction seeks to eliminate all non-Britannians from within the military. Suzaku Kururugi is the first and only Honorary Britannian to become a knight and the only non-Britannian in the Knights of the Round. Another Honorary Britannian is possibly Shin Hyuga Shing who is the leader of Knights of St. Michael in Euro Britannia.