"Rerun" van Pelt (his real name is never stated) is the younger brother of Lucy and Linus from the newspaper comic strip Peanuts. He was born during a 1972 storyline in the strip, in which Lucy throws Linus out of the house but then allows him back in after hearing that they now have a new baby brother. His nickname comes from a comment Lucy made, saying that getting another little brother was like watching a television rerun. Following his introduction, Rerun was mostly seen as a nervous back-seat passenger on his mother's bicycle whenever she went riding during the remainder of the 1970s. He rarely appeared in the strip during the 1980s, but became more of a regular character in the later half of the 1990s.
As Rerun was such a prominent character in Peanuts near the end of its run, he is the central character of I Want a Dog for Christmas, Charlie Brown, and also appears in Charlie Brown's Christmas Tales and the French-produced Peanuts short "Christmas is Coming".