The Sea Keeper

An ancient bronze dragon that lives under an abandoned pirate bay.
Guards an ancient artifact. Never leaves his island.
Most of the time he just sleeps under tons of ships, waiting for a daredevil who will try to steal his magic thing.
However, he is not actually greedy. He can exchange his other treasures, loves brave and kind sailors, protects creatures of nature.
And the main way to his heart is through stories, songs and fables from the sea.