Rillix

Background
Rillix is a Tressym type creature discovered in Nightstone, it originally spoke with Plink, but found itself trusting in Adrie more so. They have been together ever since.

Death
Upon Arannis and Ada fighting within the Inn, Rylix died in the subsequent fire.

Trivia
Had Brianna not activated her Plot Point, Rylix would still be alive, it's death being the Thorn within the Plot Point.