The Sea Wizard

The Sea wizard, was once a very handsome man, until one day, he swam in the wrong cave system. He got lost at sea and swam to a nearby cave. He found a source of natural water... or so he thought, the water turned him into a half human, half octopus creature, granting him with magical abilities. He goes around harassing lonesome fishermen at sea for shiny objects and a for a snack. He loves to eat humans.