Bill Cipher's Unhelpful Guide to Reincarnation
is The Owl House and Gravity Falls crossover story where Bill is reincarnated into Luz, and Hilarity Ensues.
- Accidental Hero: Luz opens up a portal to the Boiling Isles, inadvertently allowing Vee to escape Belos.
- Composite Character: In this AU Luz is the reincarnation of Bill Cipher.
- Dramatic Irony: When Luz accidentally opens a portal to the Boiling Isles that Vee escapes through, Belos assumes from her room that it's some demonic realm and that Luz is merely posing as a human, not realizing that it's Earth before she closes the portal.
- Enfante Terrible: Luz might have been tempered a bit by living as a human, but she was still Bill Cipher, so she's still a creepy child a lot of the time.
- Good Feels Good: After Luz secretly heals Manny's cancer, when she sees how happy Camila and Vee are at the news she feels oddly satisfied.
