Llyron's history is exactly the same as that of Earth-616's Llyron McKenzie up until the Marvel NEW! relaunch.
Llyron quickly adapted to his radiation poisoning and was able to function perfectly even with its handicaps. He accidentally spread his poisoning unto Namor whom took many years to recover. During his absence Llyron was the only Atlantean of royal descent fit to rule as prince and he did and led his people into a golden age. After Namor's return the people refused to let go of their new prince and so Llyron stayed prince.
Llyron was amongst the few chosen to be in Iron Man's Illuminati.