Within the tightly knit community of Game Of Thrones theorists, the creators of the TV series are affectionatly known as “D&D.” David Benioff and D.B. Weiss, the writers, show-runners and longtime friends behind GoT, are both playful and thoughtful with their audience, well-aware that all they want is to figure out the future of Daenerys Targaryen or whether or not Jon Snow survives.

So witnessing them sit down with Sophie Turner and Maisie Williams (Sansa and Arya Stark, respectively) wasn’t just informative; it was hilarious. D&D played the role of the “cool uncles” to the deadpan Turner and rambunctious Williams. The meeting gave us a ton of new information, and it also spilled some pretty cool insight into one of the biggest cultural phenomenons of the last decade. Here is what they told us, but note: The guys (and gals) know it’s in their best interest if they throw out some alternative facts. Needless to say, spoilers ahead.

1. The first person who was cast and agreed to be on the show was Peter Dinklage, who plays Tyrion Lannister.

2. The hardest role for the showrunners to cast was Arya Stark, because she starts so young but descends to such a dark place.

3. The easiest role to cast was Mark Addy, who plays Robert Baratheon—a no-brainer.

4. While everyone agrees that Arya is the cooler sister, Sansa feels more real. “She’s a bratty teenager!” they said.

5. The only character they have saved from the chopping block is “Locke” (or Vargo Hoat, in the books), played by Noah Taylor, because he was so much fun.

6. “Killing Momoa sucked.” Jason Momoa, who played Khal Drogo, was the toughest death of them all, even though D.B. Weiss shared that he had his hand “squished” by the Aquaman actor (a doctor’s term) during a rowdy drinking game.

7. Other people who were hard to say goodbye to: Michelle Fairley (Catelyn Stark) and Jack Gleeson (Joffrey Baratheon). The latter is “the exact opposite of Joffrey in real life.”

8. In Season 2, they made Sophie Turner sing. She thought it was so cruel of them that it might be a prank. It was not.

9. However, the cruelest prank played on set was by Nikolaj Coster-Waldau (Jaime Lannister), who sent D&D a photo of him with a shaved head. They were terrified—he’d have to wear a “Prince Charming wig” to maintain continuity throughout the season. It was an old photo that Nikolaj sent, but it started a prank war.

10. So you know all those musicians? Everyone says they want to do it, but musicians are used to being able to perform…and then leave, not stick around on set. Poor Sigur Rós was gracious but totally bored.

11. The writers teased Maisie by saying they asked Ed Sheeran to play a role. They said they are still hoping for Justin Bieber.

12. Season 7 has five shoot locations: Northern Ireland, Iceland, Croatia, Spain and now Canada.

13. The coolest sigil of the entire show is the Greyjoy’s, they think, but the Tyrell’s have the best stuff. Originally, in Season 1, they included House Estermont, whose sigil was a turtle (another favorite) but they had to be cut.

14. Benioff and Weiss’s favorite non-Game Of Thrones show is Rick and Morty, which is fair, as it is a great, great show.

15. When asked if there could ever be a dragon Whitewalker, they said, “Maybe.” But it wasn’t a coy response, so this fan theory feels less convincing.

16. The best line of dialogue spoken in Season 7 will be by Tyrion Lannister. Shocking.

17. To Maisie, the best death is Viserys Targaryen (Season 1), who was melted with gold. Sophie liked the stabbing of Oberyn Martell (Season 4). D&D liked Joffrey (Season 4). Everyone agreed Ramsay’s was the most deserved. The most expensive was Ser Meryn Trant (Season 6).

18. The guys have said that a spin-off is likely, but they don’t want to take it on. They think that HBO needs to inject some fresh blood into the Game Of Thrones family. (They hinted that they would like to see it about Hodor, but there will also be the Dunk and Egg adventures, too.) That being said, they hope to continue to write together.

19. On the depiction of women in the show, they both took on the series because it contained “more compelling female characters who have agency than any show we’ve ever seen. This has evolved off screen as well: Sophie Turner’s work with Sansa has turned her into an activist.

20. Williams and Turner were teased about their hair colors, which both changed during the off-season. Williams smartly points out she dyed her hair back to Arya’s tone, but the rest pointed at Turner’s blonde hair. Could this bode poorly for beloved Sansa?