|Series||Tate no Yuusha no Nariagari|
|Medium||Light Novel, Manga, Anime|
|VA||Rina Hidaka (Anime), Yuka Iguchi (Drama CD)|
Filo is a filolial, a bird-like kind of monster. Due to her association with the shield hero, she develops into a filolial queen and attains the ability to transform into a human form.
After meeting the current queen of the filolials, Fitoria, she is accepted as a queen candidate.