What do you think au evil Calliope's arc would be? How will she screw up everybody?
I believe I’ve talked about this before haven’t I? Oh- Wait no, it was a Lord of Space vs Muse of Time thing I talked about.
If Calliope was evil, though, I could see a ‘for the greater good’ kind of attitude, rather than English’ Mindless Destruction, she would be a powerful source of Destruction in the setting because she knows the only way to End the Story is to destroy it completely, erase every single thing and free the characters that are Slaves to Paradox Space with a merciful Death.