Millie Parfait is a female English/Filipino VTuber affiliated with Nijisanji EN's third wave "Ethyria", alongside Nina Kosaka, Enna Alouette, and Reimu Endou. Millie is often sweet and endearing to her fanbase, but she can also be aggressive in blurting out 'cursed' comments and retorts to her debut-mates and fellow Livers. She has a reputation for being one of the most aggressively risqué livers in the English branch, but she gets embarrassed surprisingly easily. Millie regularly does gaming streams, discussions about anime and other random topics, and ASMR streams once a week. She has a close relationship with Enna Alouette, her debut-mate, and both of them frequently share fond memories of hanging out with one another during collab streams. Millie's backstory involves being accused of witchcraft as a child and saved by Lucie, forming a pact to become a witch. She relocated to the underworld and became the Great Witch of Calamity. Unable to use her magic on Earth, she became a VTuber and now resides in a cardboard box in Elira's basement. Millie has a playful and flirtatious personality, often jokingly flirting with both male and female Livers, but her advances typically end in failure. She has close ties with Indonesian VTubers from both Nijisanji ID and Hololive Indonesia.