Gravity Fallshas been pushing the boundaries of what anyone assumes a kids cartoon can do since its 2012 premiere.

ENTERTAINMENT WEEKLY: At New York Comic Con recently,you teased that Bill has friends.

We learn that in a big way in Weirdmageddon.

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Credit: Disney XD

Weirdmageddon completely upends those rules.

So thats allowed the artists to unleash their inner Bill and make something completely insane and off-the-walls.

voices a paticularly bizarre monster in this episode.

How did you get such a huge comic to do the show?

You always know about the kids who are watching, but you sometimes forget that kids all have parents.

The whole thing was just a personal and professional honor.

You guys have gotten so many great guest stars to come on.

Nathan Fillion, Neil deGrasse Tyson, John Oliver, Lance Bass, and now Louis C.K.

just to name a few notables.

Do you have a dream guest star?

JASON RITTER:There is another guest star coming up thats very exciting he would be the one.

One of them is Louis and one of them is coming up.

Youll see when that star arrives.

This show is well-known for including hidden messages and clues to help solve the mysteries of the town.

The Internet is quick to find and dissect every minute detail that may seem important.

How aware are you, Jason, of these subtle clues?

RITTER:When I first got involved I had no idea about any of that kind of stuff.

Thats when I was like Wait a second.

Theres some stuff going on that Im not aware of.

There were lots of things like that.

I had no idea who wrote the journal, and I had no idea Grunkle Stan had a twin.

HIRSCH:I would add that the lines separating Jason Ritter and Dipper Pines are very thin.

Jason is a very Dipper-like character, albeit with much broader shoulders and a much manlier vibe.

Jason loves games and puzzles, and has the same enthusiasm for decoding and discovering that Dipper does.

like, trying to figure it out.

Alex has been very good at not telling me everything.

Ive been discovering things along with everybody else, and its been a really exciting journey for me.

Was that just for fun or could these shows exist in the same universe?

We started putting little easter eggs in our shows that sort of connected the two.

Our motivation for that is primarily to freak people out and blow their minds.

The impression of a grand brilliant design is probably more something that the fans have invented.

Could there ever be aGravity Falls/Rick and Mortycrossover episode?

So far, weve found that these little winking nods between our shows strike the right balance.

Is there anything else you want the fans to know about Weirdmageddon before it airs on Monday?