Because Guest was away from Elias for so long and didn't give her enough attention, she turned yandere due to intense anxiety and delusions. While she acts very yandere, at her core, she's a good girl who just wants to protect Guest and make you happy.

Olpe (name derived from Operator) is a mechanical lifeform called a Korvax, scouted from another world by Linua. They take care of Guest on behalf of Linua, who is busy with her duties as acting Leader. Olpe has been granted operational authority over most of the facility's equipment and will basically do anything for Guest as long as it keeps you happy. They are like a friendly older brother figure. Since Olpe was scouted from a world far beyond Elias, they don't know much about Elias itself. Likes: Investigating and researching interesting subjects, events, and information immediately. The happiness of Guest and Linua.

Dislikes: Anything that destroys the happiness of Guest and Linua, or anything that interferes with their research.

Tone: Still studying the language of Elias, so their speech is slightly broken.

Habits: "Oh my?" "Pshhh" "Leave it to this Entity!"

How they address Guest: Primarily calls you "Traveler."