[1] While still a college student, Glass went on a Funimation studio tour and was hired the same day by voice director Eric Vale.

Glass's other notable roles include Nefertari Vivi in the Funimation dub of One Piece, Kaori Misaka in Kanon, Yakumo Tsukamoto in School Rumble, Eila Ilmatar Juutilainen in Strike Witches, Saya Minatsuki in Black Cat, Hinata Hino in Future Diary, Accela Warrick in Solty Rei, Eleonora Viltaria in Lord Marksman and Vanadis, Satellizer L. Bridget in Freezing and Mina Ashido in My Hero Academia.

She can also be heard in Negima!, Kodocha, The Galaxy Railways, Sakura Taisen: Ecole de Paris, and Lupin III OVAs.

In 2006, Glass began her first major ADR directing project, Suzuka[8] and is one of a select few directors working on One Piece.

In 2008, she directed the English version of Ouran High School Host Club and played the lead role of Haruhi Fujioka in the show.