Of Owls and Spartans is a The Owl House and Halo crossover story in which Luz is a Spartan, and ends up in the Isles by accident when her ship crashes. Now she must navigate this strange new world while trying to find her way home.
- Break the Scientist: Luz's AI companion Delta has a bit of a breakdown upon hearing that the witches of the Isles can break physics by just drawing a circle in the air using bile.
- Child Soldier: Luz is a Spartan, but is obviously not an adult. Eda decides not to tell her about the portal to save her from returning to such a fate.
- Cruel to Be Kind: Eda decides to keep the truth about the portal from Luz to save her from having to return to being a Child Soldier.
- Hyperspace Is a Scary Place: Luz and Delta somehow end up crash-landing in the Isles during a trip on a ship with an experimental engine.