What is another word for "champion"?

Roget's Thesaurus (1911) lists these synonyms for "champion": abettor, ablegate, accessory, accomplice, accredit, acting, adherent, adjunct, adjutant, adjuvant, advocate, after, ally, alter, angel, answer, appear, archon, assistant, associate, auxiliary, backer, behalf, brief, candle, chancellor, clerk, coadjutor, coadjutrix, collaborator, colleague, commissioner, complice, confederate, confidant, confrere, consul, cooperator, court, criminal.