Sebastian Delmar is the self-assured and sensible heir to the sea kingdom, or at least he tries to be as self-assured as possible, but it’s not that easy when he's quite literally out of his element. While on land, he's skittish, awkward, and regularly trips over his own tail.
However, when he's in his comfort zone, underwater, he proves to be rather handsome, charming, and regal. He's trying his best to be a good prince and figure out how to use his abilities, but being outnumbered by land dwellers and girls makes things difficult for him. When he’s not being pushed around or serving as the butt of every joke, he tends to be the voice of reason and diplomacy in the group.