Zuri Aztek, the first to take up the mantle of Zuri the Amazing Superhero. He was a leader of the superhero community during the Old Age until the death of his physical body during the struggle against Cthulhu. He transferred his consciousness into Nexus's body and served as a mentor to him during the New Age. At the end of the New Age, Nexus sacrificed himself, allowing Zuri to reform his body over Nexus'. At the end of the Age of Reform, in order to defeat the Dark Ancient Redion, he removed his block on his powers, becoming Zuri the Amazing Superhero Unleashed and wiping Redion out of existence. He lost his mind due to a combination of his grief over his failed relationship with Samantha Storm (and betrayal of his friend, Sean Kane) and his overwhelming new power. He then altered reality, killing every single supervillain in Universe-223.
Samuel Aiden, an AU version of Zuri Aztek took on the mantle temporarily for most of the New Age after Zuri Aztek died in his efforts to defeat Cthul'hu. Before this, Samuel Aiden was known as Nexus. He eventually sacrificed himself to bring back Zuri Aztek.