Ariel Walsh is a premade townie featured in Isla Paradiso, from The Sims 3: Island Paradise. She can be made playable by marrying her, or asking her to move in. At the start of the game, she already has 7 points in Scuba Diving and has mastered Charisma.
In terms of appearance and traits, she is possibly a parody of the main character of the 1989 film The Little Mermaid, though she is not a mermaid. Besides having the same name and a similar appearance, the main character of the film could also be considered to possess the technophobe, excitable, and friendly traits.