Callisto is one of two humans on the Viatorem! She is loud, adventurous, and a little bit of a handful. She really admires Brooklyn and is close friends with them, and spends most of the time on board helping where she can. She also acts as a sort of adopted older sister to Lexell. She tends to zone out a lot of the time, not really focusing on their surroundings. They are easily distracted, nearly anything catching their attention in a moment's notice. They have ADHD, and absolutely cannot sit still.