Tonn is a former siren who thought drowning sailors was a "total drag". She decided to ditch the gig and made her way to a lake where she could relax and go at her own pace. Unfortunately for her the lake was also visited by an annoying demon and easily-stressed fairy. They're her friends now.

Tonn is introverted to the max and easily irritated, which makes her an easy target for Ollpha's pranks and annoying conversation. Despite this, she has never made any effort to really push them away, but she'd never admit to being thankful for having close friends. Her humor is very dry and she has zero filter for curse words. She has an outwardly vulgar vocabularly as opposed to her elegant siren counterparts.