After Bart hits him to get him out in dodge-ball, he caught the ball, which had been flung high into the air after hitting him, meaning that the fourth graders lost the game. This started a war in the school between the fourth and fifth graders. Eventually, when the fourth and fifth grades planned to commit a brawl after school, Bart realized that he and the 5th grader have the same sword-shaped scar on his hand.
As Marge and the other moms got back together, so did their children. Erik and the two other kids dared Bart to do crazy things and Bart wanted to split them up again, which they eventually did. Erik has yet to reappear.
- While his name was not revealed in the episode, his name was revealed in the caption of a video on the site, Simpsons World and various press releases for the episode.