History
On Earth-772, events surrounding the Fantastic Four happened radically different early on in their careers, starting with the inclusion of Spider-Man into their ranks. This pushed Susan Storm to the sidelines, and the neglect she received from her teammates and Reed Richards in particular sent her flocking to Namor, who married her and made her his queen.[1]
Sue soon become pregnant with Namor's child, a pregnancy that had complications when coming to term. The situation was made more complicated by an attack by both Reed Johnny, Sue's brother, who sought to commit genocide on the nation of Atlantis in a misguided attempt to bring Sue back to the surface world. Reed planted a bomb that would remove all the oxygen from the water around Atlantis, however when Reed realized that this would risk the life of Sue and her unborn child, Reed aided the Atlanteans in disarming it. The baby was born shortly thereafter and named Leonard after Namor's father.[1]Attributes
Powers
It would appear that Leonard at the very least has abilities that are part of the natural physiology of typical Atlanteans. Because he does not have blue skin like typical Atlanteans, it would suggest that Leonard is perhaps amphibious much like his father. As in other universes children of Susan Storm eventually developed mutant powers, any additional abilities Leonard may develop at adolescence remain unrevealed.