No, Mori Calliope is not a guy. Mori is a girl.

Mori Calliope is a VTuber who does the VTubing scene right. She is herself. She is her character. She is a character who is in our world.

Mori Calliope is a Japan-based Virtual YouTuber & social media star. She rose to fame after her virtual streams got pretty popular on YouTube.

As of 2022, Mori Calliope has more than one million subscribers on the platform. She is also a member of the Hololive English.