Raised by his father from an early age to take on the responsibilities of guarding the Floating Island and the giant Master Emerald with one of his and Sonic's greatest enemies encased inside, Knuckles has gone through many problems - including thinking that he lost his father into the Forbidden Zone when he was only nine years old, fighting Sonic the Hedgehog on numerous occasions, multiple Chaos Emerald thiefs including Doctor Robotnik and Mammoth Mogul, discovering the existance of his cousin Kragok and a menace known as The Dark Legion, and even dealing with Enerjak - The ancient Echidna evil of history - who just so happens to be his great uncle. But each problem he has overcome and has emerged greater, becoming fully worthy of his title passed down through heritage - Guardian Of The Floating Island. Knuckles is very brave, but VERY short-tempered as well. He's curious as to how his world works and what has happened to him though and is always hungry for answers to his many questions and he takes his role as Guardian of the Floating Island very seriously. Knuckles has made amends with Sonic and even though they operate on two completely different aspects - they each respect each other and often find that thier problems arent really that much different. Knuckles receives aid in his duty as guardian from the Chaotix: Mighty the Armadillo, Espio the Chameleon, Vector the Crocodile, Charmy Bee, Julie-Su, and Ray The Squirrel. It was with their help that Knuckles was able to stop Dr. Robotnik's plan to steal the Power Emeralds and save the six Chaos Rings! Ever since then he found out that maybe it wasn't so bad having help around occasionaly - and the Chaotix are always there to back him up whenever needed! Always hot on the trail of finding out secrets relating to his past and heritage, Knuckles seeks to make a relationship with the man he never knew: Locke - his father, the mother he never got a chance to love: Lara - who just so happens to be marrying someone else after divorcing Locke, dealing with Julie-Su, a rogue echidna that once served the Dark Legion, dealing with his Great Grandfather Athair - the mystic that gave up his role as guardian, and coming to terms with the family that he really never got a chance to love. Knuckles' life is never easy or simple but he enjoys his job and honestly wouldn't trade it for anything in the world. When Knuckles collects seven Chaos Emeralds, he becomes Hyper Knuckles! As Hyper Knuckles, all of his natural abilities are enhanced. He is also invincible to all attacks (except getting smashed and drowning), and glows a flashing hot pink color. However, he needs to have at least fifty Rings to utilize Chaos Emerald power, and he must keep a steady supply or he'll turn back into normal Knuckles.