Princess Mindy is a mermaid who originally appeared in The SpongeBob SquarePants Movie. She is King Neptune and Queen Amphitrite's daughter and is Triton's 'little' sister. Patrick seems to like her. In Tiny Sponge Adventures her young relative is Mary Mermaid & she appears as one of the teachers in the series. In SpongeBob: After The Film, she is releated to the ex mermaid/now mortal. Adele "Allua".