- Actor Allusion: Upon meeting Celestia, Discord gives his name saying she can either call him that, or John.
- Twilight's alias in The Empress Returns is Tara.
- What Could Have Been: The author has said that he originally intended to have a scene where a young Chrysalis (either missed by Celestia's forces or spared for being a child) finds Metamorpha's body in Fillydelphia and swears revenge.
- The first fight with Discord would have ended with Celestia delivering a No-Holds-Barred Beatdown on Discord, and later Celestia and Luna would face off against Discord and his army of Changelings with the first of the Legionnaires.
- Also, Cadence was originally Luna's daughter, but this was cut for pacing issues and potential issues with her relationship with Shining Armor.
- There were multiple changes made to the Siege of Canterlot — among other things, the kind priest Celestia met beforehand was supposed to perform a Heroic Sacrifice to protect her, and the Loyalist Lunar Knights were supposed to use the crystal caverns underneath the city to attack the Traitor Legions from behind.
Trivia / The God Empress of Ponykind