Calliope Vanhelm is a human that is secretly a witch within an anti-magic world. She is the ex of Dot who just couldn't seem to fully let go of the relationship, even despite the fact that she's been keeping the fact of her being a witch a secret from her. And the pressure of keeping her magical alignments a secret only adds on to her slight paranoia. Upon being found by the band, Calliope can't bring herself to either run or fight against them, especially after seeing Dot trying to calm her down.

As a character, Calliope sometimes bounces back and forth between being calm and collected to sounding crazy and being paranoid that someone is going to try and strip her magic away from her. Despite no longer dating Dot, she still adores her. Anyone that shows Calliope a hint of kindness will remind her of Dot. And she does have a soft spot for those who are selfless and caring. Yet, she gets extremely hostile when even the slightest hint of danger is shown to her.