Blaze is a lavender and violet-furred, anthropomorphic cat with gold eyes, a small black nose and a white-furred muzzle. She has triangular ears with peach colored canals and a long tail with the end frayed and dark purple. Her fur is longer on each side of her head and sweeps slightly upwards. She has four plumes of hair with dark purple tips done up in a high ponytail with a red hair tie. She also has a red oval gem on her forehead, resembling a bindi.

A noble soul, Blaze is normally calm, solemn and level-headed, but tends to conceal her true feelings. She is often described as elegant, which is demonstrated through her body movements and her ballerina-like fighting style. Being royalty, Blaze is quite mannerly and typically maintains a relatively quiet, stoic and formal air among others. She tends to have body language less casual than most others, such as in Sonic Generations, where she stands straight and tight rather than relaxed like the rest of the cast. She also usually speaks in a polite and lady-like tone. While honored of her heritage as royalty, Blaze is down-to-earth and dislikes being called by her title. Blaze is likewise highly perceptive; due to having people that lie to her daily because of her status as a princess, she has developed a keen intuition, allowing her to sense and see through the lies of others.