|Appearance||Tales of Phantasia: Narikiri Dungeon X|
|Japanese Voice Actor||Yukari Tamura|
Ethos (エトス Etosu?, "Etos") is a supporting character in Tales of Phantasia: Narikiri Dungeon X. She is the adoptive mother of Dio and Mel. Due to her role as the two central protagonists' parental figure, Ethos naturally has an overprotective personality.
Ethos believed she was a fairy but could remember none of her past. Her story started with her wandering the world alone in search of other fairies.
After a long period of time traveling, she began to lose her power until one day she passed out. A mysterious woman named Norn appeared before Ethos and nursed her to health. Norn then asked Ethos to care for two babies, Dio and Mel. Ethos was reluctant to take on the responsibility but proved to care a great deal for her adoptive children.
Late in the story, Ethos learns she is not a fairy but actually the spirit representing the element of sound. The other spirits had taken her memory as a consequence of misdeeds from her past. To atone for this, and because she had come to love motherhood, she would adopt several more children, effectively turning her house into an orphanage.
- Ethos's name derives from ethos, a Greek word meaning "character" that is used to describe the guiding beliefs or ideals that characterize a community, nation, or ideology.