Who holds the ultimate grudge? This tier list dives into the most intense rivalries, from the simmering tension between Sasha and Kip to the explosive confrontations involving Shane and his dad. We're ranking the characters who have a history, a score to settle, and a burning desire to one-up each other. Is it Arthur and Jessica's long-standing feud, or perhaps the familial friction between Ilya and his parents that takes the cake? Prepare to debate who truly embodies the spirit of heated rivalry, from the quiet animosity of Svetlana to the outright battles of Scott Hunter.