7. Learn the Lingo
Every comic book, video game and sci-fi/fantasy novel has its own vernacular, so don't be quiddiculous and take the time to master the lingo like Phil Dunphy (Ty Burrell) from Modern Family. Phil is a Harry Potter fan, and he's familiar enough with the book series that he not only knows the meaning of the word muggle, but he'd never be mistaken for one because of his epic love of magic. Phil Dunphy also seems to have a love for Hermione, as revealed in this exchange with Claire in the " Party Crasher" episode:
Claire: "What middle-aged guy would be interested in a young, attractive, newly legal woman? Oh, that's right. All of them."
Phil: "That's not true. I wouldn't."
Claire: "Really? Hermione Granger."
Phil: "What? I'm just a Harry Potter fan. Has she blossomed into a lovely young lady? Yes, but... Luke! I'm never telling you anything!"
6. Be Prepared to Wait in Line
The casts of Once Upon a Time and Once Upon a Time in Wonderland will be signing autographs at Comic-Con, but be patient. You'll need to wait in line to meet the stars and you should never ask them to sign your chest unless you're Kate Beckett trying to get Richard Castle to put an inscription in his latest book.
Preview Richard Castle's "Storm Season" graphic novel.
5. Know Your Celebrities
Comic-Con will be full of celebrities, and this year you'll be able to see Clark Gregg (Agent Coulson) and executive producer Joss Whedon from Marvel's Agents of S.H.I.E.L.D. at their panel on Friday. If you're on the lookout for stars, just be sure that you know who they are. Gloria (Sofia Vergara) from Modern Family was galaxies far, far away from recognizing that Billy Dee Williams is famous for playing Lando Calrissian in the Star Wars films, The Empire Strikes Back and Return of the Jedi.
4. Don't Ask Anything Off Limits
Most Comic-Con panels end with Q&A from the fans, but some topics are off limits, so respect those boundaries. When Harrison Ford was on Jimmy Kimmel Live, he refused to answer any Star Wars questions. Don't be a scruffy-looking nerf herder and waste anyone's time -- ask only the questions the stars are allowed to answer.
3. Brush up on Your Comic Books
Comic-Con is really about all things pop culture, but comic books still play a large part in the convention. Take a cue from Once Upon a Time's Henry and brush up on your superheroes like the X-Men and Avengers before assembling at the con.
2. Have a Good Appreciation of Video Games
While other expos like E3 have the corner on video games, you can still get your game on at Comic-Con since it's another good opportunity for video game developers to debut and demo their upcoming titles. Last Man Standing's Mike Baxter (Tim Allen) might not be a fan of sitting on a couch indoors playing games, but he should at least respect that most gamers have the sharpshooting skills of a hunter like him.
1. Study Your References
Comic-Con attendees love their insider references. This clip from the Season 1 finale of The Neighbors featuring Star Trek's George Takei (Sulu) and Star Wars' Mark Hamill (Luke Skywalker) is chock-full of fanboy references. Get in the know, or it'll be all Greek (or geek) to you.
Enjoy Comic-Con International 2013! Follow our coverage and breaking news for Once Upon a Time and the upcoming ABC series, Marvel's Agents of S.H.I.E.L.D. and Once Upon a Time in Wonderland!