User blog comment:Metal Mario875/Bill Cipher IS High 1-C ~ "Higher Dimensional Bill Debunked" Debunked/@comment-8213668-20171018213259

Might i add something ? Because i actually see people arguing that "Pan-Dimensional" can refer to universes now. People think they can rewrite real life physics because they want to downplay a character...

So, the fact that they're stated "Pan-Dimensional" implies that they exist in every existing dimension (regardless if you understand it to be dimensional planes or universes, that's what "Pan" means). But they're also stated to exist in 7 to 11 dimensions at once. The Gravity Falls multiiverse is infinite, it was stated multiple times. So beings that exist in 7 to 11 universes at once wouldn't exist in all of them. So even if you ignore the very meaning of Pan-Dimensionality (which is already stupid), it can still only be mathematical dimensions.

(You can see this debate on the subject if you wanna cringe a bit)