|Species:||Crow (anime, PGSM, musicals); shapeshifting humanoid from the planet Coronis (manga)|
|Associates:||Phobos, Rei Hino/Sailor Mars, Sailor Lead Crow (manga only)|
|First Anime Appearance:||Cursed Buses! Fire Senshi Mars Appears|
|First Manga Appearance:||Act 3 Rei SAILORMARS|
|First PGSM Appearance:||Act 3 - The Third Senshi is Miko Rei|
|Actors:||Aya Yamane (Sailor Moon Eternal), Kelly Baskin (Viz dub)|
In the manga, Deimos and Phobos had a much larger role. The two of them could assume human form, and did much more to help Rei. In Act 41, they gave her the Mars Crystal, allowing her to transform into Super Sailor Mars. In Act 52, they encountered Sailor Lead Crow, whom they knew from their home planet of Coronis, where they all trained together before Deimos and Phobos were chosen to become companions of Sailor Mars. They were killed by Lead Crow, who took their Star Seeds.
Phobos and Deimos were almost identical in their humanoid forms, with the only difference being the color of their clothing. In the artbook Original Picture Collection Volume IV, Phobos was in purple clothing and Deimos in red, but in Original Picture Collection Volume V, the colors were reversed. In the Sailor Moon Eternal visual book, Deimos wore purple.
In the musical Sailor Moon S - Usagi Ai no Senshi e no Michi, Death Debu Re disguised himself as Deimos in order to trick Ami, whom he suspected had a Pure Heart. In that musical, it was implied that Phobos and Deimos were just crows.