In the first Era 668-700, Vivec and the two other members of the Tribunal (Sotha Sil and Almalexia) help Nerevar, the leader of the Chimer, in the War of the First Council. The war between the Chimer and the Dwemer concerned Kagrenac's Tools, things of great power and great risk. The Chimer win the war and the Dwemer disappear after using Kagrenac's Tools. Nerevar persuades Vivec and the Tribunal to make an oath to never use the Tools.
However, after the controversial death of Nerevar, Vivec and the rest of the Tribunal decide to use the Tools to gain immortality. They venture to The Red Mountain where Kagrenac's Tools' power resides, and after a ritual is finished and they become immortal demi-gods. Then the Daedric Princess Azura appears before them. She confronts and questions them as to why they broke their oath to Nerevar. The Price of Dusk and Dawn then curses them and the Chimer race. From that point on the Chimer are known Dunmer and are recognized by grey skin and scarlet eyes. Possibly because of Vivec's immense power, he only becomes half grey. He retains half of his former Chimer coloring.
Then in 1E2920, the Cyrodiil Empire invades Morrowind during the Four Score War. Vivec, acting as general of Morrowind's army, fights hard yet cannot defeat the superior forces of Cyrodiil. Morrowind is now a part of the great Empire of Cyrodiil.
In 2E572, Akaviri forces invade Morrowind. Vivec teaches his people to breath water. He then floods Morrowind, killing the invaders.
In 2E882, Dagoth Ur and his fellow Ash Vampires awaken in the Red Mountain. They block the Tribunal's access to the heart chamber; without an access to the Heart of Lorkhan, the power of the Tribunal starts to wane. Vivec and the Tribunal erect a Ghostfence to keep Dagoth Ur and his adherents out of the habited areas of Morrowind.
In 2E896, the new Cyrodiil Empire under Tiber Septim threatens to invade Morrowind a second time. In order to avoind bloodshed, Vivec makes a deal with Cyrodiil. He would surrender Morrowind under the condition that "all rights of faith and self-government" would stay with him. Septim agrees and as a seal to the successful negotiation, Vivec gives Numidium, one of Kagrenac's Tools, to Tiber Septim.
Vivec was one of the more active members of the Tribunal. He performed many public acts of heroism, including saving the lives of the other members of the Tribunal. He was the last to stand against Dagoth Ur, maintaining the Ghostfence after Sotha Sil withdrew completely into his own clockwork world and Almalexia gave in to despair.
In 3E417, The Tribunal loses Keening and Sunder (two of the Kagrenac's Tools).
Circa 3E427, Vivec meets the Nerevarine, the hero of Azura's prophecy and Nerevar incarnate. Vivec gives Wraithguard, the last Kagrenac's Tools in Tribunal possession, to the Nerevarine. He also teaches the Nerevarine how to use Wraithguard, Keening, and Sunder in order to destroy the divine connection with the Heart of Lorkhan.
Eventually, the Nerevarine successfully severs the divine connection and defeats Dagoth Ur. The Tribunal lose much of their divine power, but he faith of their people endures. Vivec plans to use this to reorganize the Temple, and again unite the peoples of the Tribunal.