Juliet Simmons is an American voice actress known for her extensive work in English dubs of anime series, primarily produced by Sentai Filmworks. Born on January 22, 1995, in Houston, Texas, she began building a foundation in performance from a young age, participating in musical theater, dance, and vocal training.

Before entering the voice acting industry, Simmons cultivated a significant online following as a singer. Starting in 2012, she created a YouTube channel under the name JubyPhonic, where she gained popularity by posting English-language cover songs of Vocaloid and anime music. Her work as JubyPhonic involves writing translated lyrics, singing, recording, and mixing her own renditions, which have garnered hundreds of millions of views and a large subscriber base.

Simmons made her professional voice acting debut in 2013 and has since become a prolific talent at Sentai Filmworks, voicing characters in numerous series. Among her most recognized roles is Kasumi Toyama, the energetic leader and vocalist of the band Poppin'Party in the BanG Dream! franchise. She is also known for her performance as the aspiring singer Eiko Tsukimi in the series Ya Boy Kongming!. Her portrayal of the cheerful and determined Chiyo Sakura in Monthly Girls' Nozaki-kun was met with positive reception and is considered a favorite role by the actress herself.

Her career encompasses a wide variety of characters across different genres. She has taken on action-oriented roles such as the assassin Kurome in Akame ga Kill!, which aired on Cartoon Network's Toonami block, and Shizuku Kurogane in Chivalry of a Failed Knight. In fantasy settings, she voices Syr Flover, a waitress in the Is It Wrong to Try to Pick Up Girls in a Dungeon? series, and Pandemonium in The Executioner and Her Way of Life. She also provided the voice for the mysterious Tenri Ayukawa in The World God Only Knows: Goddesses Arc.

Her film work includes roles in Gintama: The Very Final as Soyo Tokugawa and in the Made in Abyss: Dawn of the Deep Soul as Meinya, a role she reprised in the Made in Abyss: The Golden City of the Scorching Sun series. Additional notable credits span a range of popular titles: she voices Nanaki Moriyama in the Fate/kaleid liner Prisma Illya series, Momoko Sudō in O Maidens in Your Savage Season, Rin Asano in Blade of the Immortal, Elise Angel in Assassins Pride, Sutea Kōroya in Mother of the Goddess' Dormitory, Warabi Hanasaka in Armed Girl's Machiavellism, Izimi Shibusawa in Chidori RSC, Momo Minamoto in Release the Spyce, Madoka Harumi in Dog & Scissors, Mio Sawada in Motto To Love Ru, Ryoko Sato in Aura: Koga Maryuin's Last War, Ichihachi (AR18) in Upotte!!, Kanade Ōe in Chihayafuru 3, and Kitty in Hello Kitty & Friends – Let's Learn Together.

Simmons's contributions to the industry have been recognized with multiple award nominations from the BTVA Anime Dub Awards. She received nominations in 2016, 2017, and 2018, including for Best Female Lead Vocal Performance, Best Vocal Ensemble, Best Female Supporting Vocal Performance, and Voice Actress of the Year. Her career is marked by a high volume of work, with over 80 dubbed shows to her credit, and a continued connection to music through her enduring online persona, JubyPhonic.