Lythia was an agent for the Zeronites.
She killed Dr Partho's nurse, Walters, so she could infiltrate Hippocrates Base. She wore a necklace which generated a holographic disguise. To create a distraction to help the Zeronites take over the base, she injected Destrii with the stimulant chlyorizine which also made her temporarily psychotic. After recovering, Destrii attack and knocked out Lythia, taking the necklace with her. (COMIC: Sins of the Fathers)