Mori Calliope is a member of Hololive English. She is the storytoller of a TTRPG campaign called Mythbreakers.
On December 6, 2020, Calli streamed herself reading “My Dad’s the Queen of all VTubers!?”, a manga about a boy who finds out the VTuber he idolizes is actually his father. Since then, her fans have jokingly called her Dad. This is reflected in the way she gives blunt, but useful advice and the way she conveys her love for others in silly or goofy ways.