Oscar Locke is the husband of Melana Locke and father of Osmond Cordae Locke who instilled his son with values of fairness. He left his family behind during the last stages of the Great War and ended up in Shipwreck Cove where he worked as a healer. After besting Captain Kusotare, Oscar became the newest pirate captain of the Blue Dragons and the owner of a ship called the Seastrider. He and the crews of the Moldy Crow and the Morning Star tracked down and saved Unithien Greyrain from Devilfish Strait, shattered the mystic Eye of Thunder and discovered the sanctuary of the goddess Tiamat.