Sullio was a female Human and Captain of the Onderon military who was murdered in Iziz shortly before the start of the Onderon Civil War. Dhagon Ghent, a local medical doctor, was singled out as a suspect by the Onderon authorities, but Nikko and the Jedi Exile, along with her companions worked to prove his innocence. In fact, Ghent and Sullio were the best of friends and often engaged in teasing so extreme that other sentients mistakenly took it for intense animosity.