Official profiles state that, as the last survivor of The Knuckles Clan, Knuckles lived most of his life in seclusion on Angel Island, an island floating in the air. As such, he is something of a loner. He is honest and gullible with a one-track mind. Knuckles is shy around girls. . Although he is cool and determined in battle, his short temper gives rise to situations in which Knuckles, often instigated by the trickery of Dr. Eggman, begins fighting Sonic the Hedgehog. Additionally, Knuckles has been tasked all his life as being the Guardian of the Master Emerald, as only descendants of his tribe are capable of controlling it. If Sonic exemplifies the wind, then Knuckles is the mountain: stern and anchored to his duty. Although they started as antagonists, Knuckles sees Sonic as both a friend and a rival. He finds Sonic's adventurous lifestyle enviable. He is also described as hating strong light. Various literature from the early games list his favorite food as being fruit, or to be more specific, grapes.
Knuckles is physically one of the strongest characters of the Sonic series, if not the strongest. His brute strength is often depicted as equivalent to that of Sonic's speed. His extraordinary physical strength enables him to perform feats such as shattering boulders with his fists. He is a master of martial arts with a specialty in punching. He uses Spin Attacks like Sonic, which are variations on the tendency for echidnas to roll into tight spiny balls for protection. Knuckles can also breast stroke to swim in water. By trapping air under his dreadlocks, Knuckles can glide for short distances. Knuckles is also a proficient burrower, and can use the spikes on his eponymous knuckles to climb walls.
|A Sonic Orgy Part 1 in Sonic|
|Slutty Rose in Sonic|
|Tails and Creamorgies saga part 2 in Sonic|
|A Sonic Orgy Part 5 in Sonic|
|Knuckles' Busty Adventure in Sonic|
|Knuckles' Busty Adventure Part 2 in Sonic|
|Knouge: Wonderful massage in Sonic|
|Rouge's revenge in Sonic|
|LUCKY LADY #2: ROUGE THE BAT! in Sonic|
|Shading in Sonic|