Fin is a mermaid and is a character in the TV movie "Sabrina Down Under." She is the older sister of Barnaby.


When Barnaby was turned into a human by witches Sabrina Spellman and Gwen when he sought help to save the mermaid colony from being infected by pollution and from being exposed to the mortal world, Fin was skeptical of the humans. Fin warmed up to them when Sabrina swam all the way to the colony to give her the antidote to the infection.

Fin recognized the errors of her ways when Sabrina rescued them from exposure.


  • Fin is portrayed by Lindsay Sloane who plays Valerie Birkhead, Sabrina's mortal best friend in Seasons 2 and 3 of the regular series.

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