Vulko is the chief scientific adviser of Atlantis and is probably its most notorious political and academic figure (he has been involved in most of the political changes and revolution the city has gone through since he first appeared). . He knew Aquaman's mother and was an advisor to King Trevis. He was present at Aquaman's birth, and argued against leaving Aquaman to die, claiming the curse of Kordax was a silly superstition. Chronologically, he later befriends Aquaman when both were held in an Atlantean prison. After Aquaman frees himself and gains his throne, he makes Vulko his regent.