Aquaman

Arthur Curry was raised by his human father on his father's lakefront property. Arthur was always curious with the water and his Father would never really let him that close to it. One night his Father died of a fatal disease, that night he passed out and woke up in Atlantis.

Arthur Curry's birth mother was the Queen of Atlantis, Arthur's real birth name was Orin. He never knew this until he went to Atlantis where he was trained to use his abilites. When his Mother died of mysterious cause's she had it where Arthur would become King. His brother The Oceanmaster had secretly started an army to overthrow Arthur and take the thrown, gaining allies like Black Manta, And much others.

Arthur Curry on his yearly trip to help the nearby village, was found by Batman where he was recruited (even though he was unwilling and hostile, Bruce always gets the yes). Arthur then joined forces with the Justice League to fight Chronos.