Olivia is  Finn's second friend. However, even though Inklings and Octolings are at peace, it doesn't mean that they haven't been treating Octolings as friends. For unknown reasons, Inklings don't trust Olivia. Olivia is rumored to have an older brother but whenever someone asks her, she denies his existence. Though there are mysteries surrounding Olivia, she is still a good person. She enjoys being around her friends, and especially FInn. A lot of girls ask her for beauty advice because she looks absolutely beautiful. She hopes for one day that no one will judge her. For Olivia's voice, I'd recommend Lillie from Pokemon Sun and Moon (or just basically a shy girl).