Attina is the first and oldest daughter of King Triton and Queen Athena and the heir apparent of Atlantica. Her age and status as the Crown Princess causes her to feel a strong sense of responsibility to her kingdom and for her sisters. She is described by them as being bossy, but ironically, she herself is often bossed around when her siblings outvote her. She is highly educated, well read and has a pet catfish named Fin-Fin. She is also known for having a calm and rational demeanor that carries a regal presence and shares a close bond with Ariel.