Personality-wise, Knuckles is serious, aloof, stubborn, and does not adapt easily. Headstrong and inflexible, Knuckles prefers to do things his own way which causes him to clash with others. Regardless, he is very strong-willed, seldom wavering in his determination. Unlike the rest of Sonic's group, Knuckles walks his very own path and is able to fight many people on his own, due to his brute strength and competence at martial arts. He also never gives up once he has a goal to accomplish, especially when its about finding the Master Emerald which is his job/duty to protect it. When on a serious mission, Knuckles is extremely self-sufficient and only says a few words. Knuckles grew up believing in honesty, and holds a strong and steadfast belief that there is good in everyone, which always lets him give people (especially Eggman) second chances. However, this makes him very naïve, quite gullible, and easily misled, which has given him a history of being tricked by Eggman. Though he is cool and determined in battle and most stressful situations, Knuckles has an extremely short temper which leads to aggression, and is difficult to talk to or reason with when he is angry. Though his wild-temper has often been known to get him into trouble, Knuckles uses his anger to fight off his enemies. Despite his solitude, temper, and blunt honesty, Knuckles is quite understanding and kind, and respects those who are nice in return, but keeps to himself. However, he shows a lot of empathy, especially for people he believes need some comfort. Knuckles is also extremely selfless, heroic, and valiant, willing to put his safety on the line to save people's, and even his adversaries', lives. Knuckles is an anthropomorphic echidna with red fur that covers most of his body, a black nose on his peach-skinned muzzle, a white crescent-shaped patch of fur on his chest, and purple eyes. He also has seven dreadlock-like spines around the sides and back of his head and a medium-sized, tri-crooked tail. For attire, Knuckles wears red and yellow shoes, each with green cuffs, light gray soles, and a gray, sextuple-bolted plate on top. He also wears large, white, mitten-like gloves with sock-like cuffs and two spiked knuckles on each hand.