Roy Mustang

Personality
Brigadier General Roy Mustang is an experienced and career-driven state alchemist who aspires to become Führer of Amestris. Mustang wishes to improve the government system, and is frequently seen pursuing relationships with women, one of his most known interests.

Alchemy Method
Mustang is a famously powerful alchemist, evidenced by his easy defeat of Edward and Alphonse. He achieves such power with the help of this Transmutation gloves, which are made of a material known as ignition cloth or pyrotex. The gloves have transmutation circles inscribed upon them that spark when Mustang clicks his fingers, creating and shaping flames and their form at his desire. Among techniques known to be used by Mustang mainly by clicking his fingers are as below. Roy can also manipulate not only the fire he creates, but the fire around him also. Many of Mustang's abilities come from his ability to affect the density of the air around him and air currents.

Weaknesses
Mustangs main weakness is that when his gloves become wet, he cannot use his transmutation circle as he cannot make a spark, consequently he is 'useless', although he can overcome this flaw as he has demonstrated, by using other methods to create a transmutation, such as when Ed used alchemy to get his gloves wet so he used matches instead.