Urun

Urun is the leader of the Auriga Tribe and a member of the Hierarchy. He wishes to retake Aiur for the glory of the protoss.

Twilight
In 2503, Urun attended a meeting of the Hierarchy to discuss Zamara, a missing preserver. There were none on Shakuras. A terran female, Rosemary Dahl, attended the meeting, along with Vartanil (a survivor from Aiur) and executor Selendis.

Urun was unhappy that Dahl didn't propose a return to Aiur, and was angered to learn that Zeratul, Selendis and Artanis had abandoned survivors on Aiur years ago. However, Vartanil himself agreed with this action, blunting Urun's protests.

Urun proposed searching for more survivors on Aiur until told they'd been killed, and even then proposed sending an expedition to Aiur in order to retrieve clues. However, fellow Hierarchy member Mohandar found a more likely location for Zamara.

Darkness
In an apocalyptic future glimpsed at by the Overmind (and others through it), Urun took part in a final stand on Shakuras against a hybrid-controlled Swarm. He rallied the remnants of the Great Fleet and alongside the remnants of his species, did battle. For all their valour, it was to no avail, and Urun fell alongside his people.