Creator's Favorite: Rolf is Danny Antonucci's favorite character. Also an Author Avatar, since Rolf's backstory and different traditions are loosely based on Antonucci himself and his relatives (Antonucci is part of an Italian immigrant family).
Cross Dressing Voice: Averted with all the characters except for Kevin, who's voiced by Kathleen Barr (who also voices Marie Kanker)—ironic, given that he's usually the toughest and most masculine out of all the male characters on the show.
Johnny is voiced by a female in the Mexican Spanish dub
Jimmy is voiced by a female in the French dub
Dub Name Change: In Sweden, Rolf is a fairly common name, so in the dub his name was changed to "Reinar" in order to sound more foreign-ish. Nazz's name was changed to Tess, presumably to make it easier to come off the tongue.
In Brazil, the name and nickname of the three characters were changed in accordance with the portuguese counterpart to "Edward." Ed was renamed "Du," Edd/Double-D was renamed "Dudu," and Eddy was renamed "Edu." It should be noted this resulted in Aerith and Bob, since every other character retained their original name.
I Knew It: Some fans accurately guessed that Eddy's Brother would appear in the movie and be the antagonist.
Keep Circulating the Tapes: "May I Have This Ed?" and "Look Before You Ed", the only episodes made for the show's sixth season before Danny Antonucci decided to scrap the remainder of it for the movie, aren't available on iTunes or any other digital service.
Missing Episode: Three. "Special Ed", which was finished but never aired due to (depending on who you ask) being either too surreal or "too real" for television. Not much else is known about it other than the fact that it might of been A Day in the Limelight for Ed, and may have even been an explanation of why Ed is the way he is, hence the "too real" explanation. The other two, "Luck Be an Ed Tonight" and "A Room and an Ed" may have never even left the planning stages.
Nazz and May, Kevin and Marie, Sarah and Lee, respectively.
Ed and Eddy in the Swedish dub. Then it's talking to herself with the case of Kevin, Nazz and Lee in the same dub.
Unintentional Period Piece: Zig-zagged. While it's obvious that the show had elements that either were no longer seen in society (or were seen in a considerably lessened occurrence) or some viewers had never heard of, such as records, VCRs, the lack of any video game consoles, children spending most of their time outside and even Patric Caird's brilliant score for the show has a 50s/60s-ish vibe to it, the actual time frame of the show was intentionally left ambiguous. This way, viewers of all generations can enjoy it without being alienated by any overt and outdated references they may not get.
An episode called "Special Ed" was slated to air, but was scrapped for being "too real." No one knows what Antonucci means by that, but that won't stop fans from guessing. Rumors state it was going to be A Day in the Limelight for Ed. note Although "special ed" is short for "special education" which is, not exclusive to, but most commonly associated with kids who suffer mental retardation. For those curious, those with with focus or emotional issues — such as attention deficit disorder or Aspergers' syndrome — can also end up in special education.
There are three four other unmade episodes that are known: 'A Room and a Ed' in which Sarah and Jimmy evict Ed out while Ed and Sarah's parents are away so Sarah can have the house to herself, causing Eddy to swing into action, completely fed up with Sarah's brattiness. 'Luck be an Ed Tonight' in which Ed's horoscope tells him he'll have a lucky day, which leads Eddy to milk it for all it's worth. 'The Amazing Ed' a talent show episode, little is known beyond that. And an unnamed episode in which Eddy attempts to start his own religion, canned by Cartoon Network because they knew it would have sparked a huge controversy.
It's hard to believe, but this show was originally pitched to Nickelodeon as a Nicktoon. While Nickelodeon has a lot of radar-dodging shows, they don't go as far with it as Cartoon Network does (possibly because they don't want another The Ren & Stimpy Show on their hands), and Antonucci knew that if Nickelodeon accepted the show, a lot would have to be changed for content/demographic appeal/general Executive Meddling reasons.
Write Who You Know: All the characters are based on either facets of creator Danny Antonucci's personality, family members, or people he knew growing up. The Eds were all aspects of his personality, Jimmy was based on a cousin, Jonny was based on a loner friend who spent time with a blanket, Rolf was based on his experiences as an immigrant, and the Kankers were based on a group of girls he knew during his 7th Grade school year. He probably (hopefully) didn't know anyone exactly like Eddy's Brother.