Bill Cipher survived Weirdmageddon with the help of the Axolotl. Bill did destroy his home dimension, but it was likely an ...

But Bill Cipher, the inter-dimensional demon bent on taking over the multiverse, is back in action — or at least, he’s back in a new book penned by Gravity Falls creator, Alex Hirsch.

There’s a new Gravity Falls book on the way, and this time it’s all about everyone’s favorite evil and triangular demon, Bill Cipher. Creator, (and also the voice of Bill) Alex Hirsch ...