Nellie Oleson is a fictional character from Little House on the Prairie. In the TV series, her arc includes a temperamental, sometimes mean-spirited personality as a foil to Laura, but her life evolves over the show, including a later marriage to Percival and appearances that imply she grows and matures. The specifics vary between the original book series and the television adaptation, but generally Nellie’s story concludes with her leaving the prairie life, starting a family through marriage, and returning for occasional plot-driven moments, while her character is often remembered for the early seasons’ rivalry with Laura.