When Worlds Collide (The Owl House meets Gravity Falls)

In the Gravity Falls universe, Bill Cipher is about to get his hands on the rift, courtesy of Mabel Pines.

In the Owl House universe, Belos is about to win, and the final eclipse was on the brink of creation.

However, in this story, something 'malfunctions'.

When the sun and moon of the Boiling Isles became one, and the rift was finally released from its snow globe prison, the energies of both realms became unstable, and it was too much for either one to handle.

As such, many of our well-known characters woke up to a whole new world...