Teyr 'Baran

"Tradition? Times such as these are the death of tradition, Demoness. I honored tradition from my youngest days. Tradition bid me obey the gods, so I obeyed them. When the Covenant fell and the Jiralhanae descended upon our world, tradition bid me obey my family, so I obeyed them. But when our kaidon died and tradition bid that I take his place, my younger brother cast it all aside and seized the title that was rightfully mine. I have had my fill of tradition, human. Help me avenge myself against my brother and I will give you the secrets that you seek."

- Teyr' 'Baran to Hera

Teyr 'Baran was a  active during the  and later the War of Exiles. Heir to the Baran bloodline—a powerful clan of the Sangheili high nobillity—Teyr saw little action against the as his family was charged with excavation and defense of key  installations. Despite his skill as a military commander, Teyr's fundamentalist approach to Sangheili customs alienated him from his peers and he was frequently passed over for promotion within the Covenant fleet. When the plunged the Covenant into civil war, Teyr's quick organization of Baran warships saved his family's worlds from rampaging  warlords. Joined by his younger brother Rol, Teyr managed a successful campaign to drive back the Jiralhanae invaders. But when the Baran kaidon was killed during the fighting, Rol convinced their clan's vassals to accept him over Teyr as the new kaidon. A humiliated Teyr had little choice but to accept this outcome; he and his family became vassals to Rol's keep. Placed in charge of safeguarding his family's Forerunner holdings, Teyr withdrew from public life until the emergence of the and the dawn of their self-declared reign over the galaxy.