Aun'shi is a member of the Tau Ethereal Caste. A modest Tau hero of many battles, Aun'shi longs for peace but is bound by duty to his comrades to wage war. Lionised by the Fire Caste as everything they believe a Tau leader should be, he is seen as a good luck charm by those Fire Warriors who have served with him. Aun'shi is more comfortable in the company of Fire Warriors than many members of the Ethereal Caste and will frequently accompany a squad into battle as Shas'aun'shi. He may select any Fire Warrior team to act as his retinue. Such a team is clearly marked for glory.
In what was supposed to be his final assignment before retirement on the peaceful Tau colony planet of Au'taal, he was sent to the planet of Kel'tyr, to oversee a Tau mining colony that was under assault by Feral Ork tribes.
During the inspection of the town of Fio'vash, the settlement came under attack by one such tribe of Orks, intent upon capturing the mine workings there. When the Shas'vre in charge of the Fire Warrior garrison was killed, Aun'shi dispatched a messenger and Stealthsuit Team to the capital for help and led the defence himself, slaughtering Orks by the dozen armed with only his Honour Blade.
As dusk fell, Aun'shi and less than fifty Fire Warriors remained to protect the town. The Tau fell back to a barricaded shrine in the centre of town, where they prepared to make their final stand. Aun'shi stood at the door to the shrine and stood his ground, never moving even when the doors themselves were ripped from their frames. Suddenly, the Orks were thrown into disarray as massed Tau reinforcements attacked. Devilfish troop carriers, Hammerhead tanks and Broadside Battlesuits dropped from the sky, quickly devastating the Ork mobs and scattering the survivors. Aun'shi still stood at the shrine's door, his honour blade slick with greenskin blood. The Ethereal shrine still stood, and the mines of Fio'vash remained in Tau hands.
His defence of Fio'vash was considered a great victory, despite the horrendous casualties suffered by the Tau. When word reached the Ethereals on T'au, it was decreed that Aun'shi would continue to serve the Greater Good and expand the Tau Empire, instead of retiring. Aun'shi is considered to be a hero by the Fire Caste, and a huge marble bust of him was erected in the battledomes of Vior'la.
At present, Aun'shi is reported to be leading a Tau expedition to reclaim the Farsight Enclaves for the Empire.
- "I have taken great pains not to laugh at the actions of aliens, nor to weep at them or to hate them, but to understand them."
- "How ironic it is that as fast as we spread progress and hope throughout the galaxy, the Tyranids spread death and despair. Only united can we hope to stand against them."
- Codex: Tau (3rd Edition)
- Codex: Tau Empire (4th Edition)
- Codex: Tau Empire (6th Edition), pg. 91
- Codex: Tau Empire (7th Edition), pg. 79
- Master of the Blade – Aun'shi, Hero of Fio'vash. Games Workshop Website. Retrieved on April 20, 2006.