Creator Breakdown: Before the album was produced at that. Suffice to say, when Jimmy passed away, the band was horribly devastated, working on the album without not just their drummer, but best friend. These emotions, as well as the immense shock of Jimmy's passing is what lead to arguably their darkest album, Nightmare.
The bassist on their first album, Justin Sane, is not Anti-Flag's guitarist who uses the same stage name.
Likewise, Johnny Christ (b. Jonathan Seward) is not to be confused with John Christ (b. John Knoll), who played guitar for Samhain and Danzig in the '80s and '90s.
Mean Character, Nice Actor: The members often have a gangster/thuggish persona, but are actually very down-to-earth and friendly (Zacky Vengeance and Johnny Christ, in particular).
The Pete Best: The band's first three bassists (Matt Wendt, Justin Sane and Dameon Ash) are very often forgotten. Justin did in fact play on Sounding the Seventh Trumpet, but the band didn't gain any mainstream success until Johnny Christ joined the band. Justin had to be let go because he suffered brain damage in a suicide attempt, and M Shadows has described his post-recovery persona as "constantly on an acid trip".
Subverted by Zacky. Avenged Sevenfold were a four-man band on the original release of Sounding the Seventh Trumpet, with Zacky playing lead guitar. Syn wasn't added until the re-release (where he only played in To End the Rapture), although fans tend to assume he was always the band's lead guitarist and Zacky was always the rhythm guitarist.
Scully Box: Johnny Christ had to stand on one for the video of Nightmare.
Song-wise, "A Little Piece of Heaven" was not planned to be part of the Selftitled Album, but persuasion from Shadows, on the condition that The Rev (who created the rough ideas for the song in the first place) would be the one to fully-supervise the production, made sure that it did.
Word of God: The song and video for "Bat Country" are both confirm to be based on Fear and Loathing in Las Vegas. This should be obvious to anyone who's seen the movie or read the book, even if the title of the song didn't give it away.