Jonny 2x4 is one of the Eds' friends, who makes a few special appearances in the Eds Adventures Series. In the originals series, he is seen as the most awkward, freaky, and bizzare kid in the Cul-De-Sac. His best friend/sidekick is a wooden board named Plank. They both have heroic alter egos called Captain Melonhead and Splinter the Wonderwood, as seen when they defeat the Eds and return all the spent money to the kids. In Ed, Edd n Eddy's Big Picture Show, he and Plank turn into their alter egos to get the Eds for their most disastrous scam ever. In the End, after the kids see Eddy's bravery and accept the Eds as friends, Jonny and Plank come in and plunder them, only to beaten up by the other kids and becoming the new outcasts. But it didn't end there; As revenge on the kids for beating them up, Jonny and Plank abandon their old and good egos to become the evil Gourd and Timber the Dark Shard, but Plank pointed it was already the end of the movie and Jonny questions "what movie?"
Otherwise, he would be the friends of the eds and other kids, however the annoying one, and in The eds and friends and the emperor's groove, he returns to his heroic ego and saved Kusco from Jaguars.