Jake Windsnap is Emily Windsnap's father. He is a merman. Jake fell in love with Emily's mother (a human), Mary Penelope Windsnap, who he nicknames "Penny". They got married, but Neptune, the ruler of the seas, had a rule that forbid the marriage of a human and a mermaid/merman. This rule was established because Neptune once had a romance with a human woman named Aurora who died trying to swim to him, and therefore broke his heart. Neptune's guards found Jake and took him to jail in the Great Mermer Reef. He was imprisoned for life until Emily found him.