Numerous series exist which are based upon the Composition, but not canon to the Composition proper, or which are based on alternate universe versions of the Composition.
- Aeo Little Ponies: An alternate universe based on a combination of the standard series and My Little Pony: Friendship is Magic
- Quietus: A post-apocalyptic alternate universe.
These are series which are not part of the Composition, but through crossovers are an established and important part of the storyline.
This is a timeline of all of the series within the Aeo Composition, and any related canonical crossovers.
- Fantendo - Darkest Deeds
- Strafe is born
- Strafe's mother is killed by Lock - Strafe is 10
- Strafe: Heaven Born - Strafe is 18
- Fantendo - Playing War - Strafe is 20
- Sunnyscythe Plays War - Strafe is 20
- Fantendo - Forgotten Legends - Strafe is 20
- Fantendo - Wounds of Time - Strafe is 22 (2017-7245 FS)
- Strafe and Ella are married - Strafe is 22 (7245 FS)
- Strafe and Ella adopt Marcus - Strafe is 22 (7245 FS)
- Athene is born - Strafe is 23 (7246 FS)
- Teardrop Stratosball - Strafe is 41 (7264 FS)
- Strafe leaves Atlantica and returns to Noah (7264 FS)
- Syria is born - Strafe is 42 (7265 FS)
- Syria catches the Rot, followed shortly by Strafe - Strafe is 50, Syria is 8 (7273 FS)
- Strafe dies at 58 - Syria is 16 (7281 FS)
- Syria - Syria is 22 (7287 FS)
- Syria goes to Atlantica and is cured of the Rot - Syria is 23 (7288 FS)