Jennifer Alyx (born April 12, 1975) is an American voice actress best known for voicing naive young girls. One of her earliest most known roles was Fate Testarossa of Magical Girl Lyrical Nanoha where she was originally the rival of its titular heroine, Nanoha Takamachi that then became her trusted ally in the long run. She is usually cast alongside Cristina Valenzuela in multiple roles such as The Familiar of Zero, Agent Aika, and the aforementioned Magical Girl Lyrical Nanoha. She originally disappeared from the voice acting scene in 2012 to work as a writer, but she seems to be coming back, playing extras in The Seven Deadly Sins, and playing several roles in Little Witch Academia.
- 5 Centimeters per Second: Kanae's Friend (Bang Zoom! Dub); Takaki's Classmate (Bang Zoom! Dub Ep. 1)
- Agent Aika: Member, Midori
- The Familiar of Zero (Season 1 only): Katie, Tabitha
- Horizon in the Middle of Nowhere: Azuma
- Little Witch Academia: Hannah, Constanze, some random students
- Magical Girl Lyrical Nanoha: Fate Testarossa
- Magical Girl Lyrical Nanoha A's: Fate Testarossa, Alicia Testarossa