Nuidis Vulko was the the royal advisor to Aquaman. He was one of the leaders of Atlantis' scientific community, and several times ruled Atlantis in Aquaman's absence. When Aquaman left the throne to live among the surface dweller's, it was Vulko that was left to deal with the backlash of Arthur's attempts to bring the Atlaneans out of isolation from the surface world. When the Atlantean royal seal went missing, most of the Atlanteans believed that it was a surface dweller diplomat that was responsible and they sought war with the surface because of this. It was Vulko, with the help of Aquaman and Nuada Silverhand, that was able to diffuse the situation by proving that Ocean Master was actually responsible.
Vulko is also the one that provided Arthur with his blue underwater stealth costume, as well as a variety of other technologies that Aquaman has had need of over the years.
Vulko was present in Atlantis when the city was destroyed by the Spectre. Like many citizens of Atlantis, Vulko was killed. His ghost has since reappeared inhabiting Windward Home where he has served as an adviser to Arthur Joseph Curry and the Sea Devils.
Major Story Arcs
Aquaman: The Waterbearer
For more information see: Aquaman: The Waterbearer
After the events of The Obsidian Age, Aquaman has been dubbed a traitor and is banished to Traitor Reef. There Vulko reads the degree from Mera that orders Aquaman's death. Aquaman tries to reason with Vulko but his loyalty to the current ruler forces Vulko to ignore Aquaman's pleas. Later while taking other prisoner to the Traitor Reef, Vulko learns that many of the the so called traitors are noble and honest people of Atlantis. With the help of a mutated creature, he calls a true Man O War, Vulko frees the captives and heads back to Atlantis prepared to give his life to get Aquaman back as the rightful king.
In a flashback, Aquaman was seen talking with Vulko. He states that as a former adviser to the Atlantean throne he knows that Atlantis needs their king, Aquaman, to lead them.
A young Arthur saved a father and daughter from crashing their small boat into the rocks off of a coast. He was aimlessly swimming the oceans after his father died. The father said there was a man named Vulko living in Norway who had claimed to be from Atlantis a few years earlier. Arthur located him and Vulko instantly recognized him. Vulko went on to tell Arthur that his mother's name was Atlanna and that she went back to Atlantis to protect Arthur and his father. She would later wed a suitor and have a son named Orm, Arthur's half brother. They then set out to find Atlantis.
Throne of Atlantis
Vulko is responsible for locating the Scepter of the Dead King and instigating a war between Atlantis and the surface world. He did it purely to force Aquaman to return to Atlantis to be king once more. After being discovered as the instigator, Vulko was taken to the Atlantean Prisons to await trial. Aquaman visited Vulko in the Prisons in hope of finding answers about who was collecting the Atlantean Weaponry. Vulko suggested that it could be Peter Mortimer a.k.a. The Scavenger.
Powers and Abilities
Vulko is a portly Atlantean who is/was physically past his prime in his appearances, but still metahuman when compared to a surface dweller (possessesing their typical abilities).
He is very bright and is knowledgeable is several areas of politics and advanced Atlantean science.
His abilities whilst being a ghost in Pre-Flashpoint continuity were not revealed.
Vulko has shown he is strong enough to punch Superman and send him crashing to an iron door, which was destroyed upon impact.
Vulko has shown he has the ability to leap great heights, seen when he saved Lois Lane by grabbing her and landing on the top of a multi store building.
He can function normally underwater and is able to withstand the high pressures and extreme temperatures of the deep.
Vulko in both continuities has been an adviser to the Atlantean royalty and a mentor to Aquaman. He possesses vast knowledge and is an expert in areas such as politics, law, Atlantean history and science. In the New 52 Vulko has shown he is also a very cunning and tactical thinker, successfully implementing a plan that temporarily took out the Justice League and effectively helped put Aquaman back on the throne of Atlantis.
Vulko in both continuities has shown that he is a capable leader when needed, even serving as the ruler of Atlantis when Aquaman was not on the throne.