Retreating from them, Scar then joins with the former military lieutenant Yoki and a young immigrant named May Chang to go to Central City to continue his revenge. Knowing that the Elric brothers are headed to the first branch library, he goes there to ambush them, but he is found by creatures known as the homunculi. Using his new ability, Scar tries to kill the state alchemist Edward Elric in Eastern Headquarters, but escapes upon being ambushed by the military. When Scar awakens after the incident and discovers his brother's arm attached to his own, he kills the doctors treating him, Winry Rockbell's parents, in a blind rage. However, instead of fully transmuting what he comes in contact with, he simply decomposes it into individual elements, completely obliterating the object. This gives Scar the ability to use alchemy despite being a taboo for his people's religion, as Ishvalans believe that only God has the right to create. With the last of his strength, Scar's brother attached his own arm, through means of alchemy, to Scar. Kimblee attacked Scar and his friends and family. During this war, a state alchemist named Solf J. Scar is introduced in the series as a serial killer who targets alchemists working for the state military from the country of Amestris in revenge for their involvement in the Ishvalan civil war, which caused the death of several of his comrades. Michael Tatum is the second English voice of Scar, Tatum replaced Clarke following his hiatus from voicework and was experienced as he had replaced Clarke as Victor Hilsire in Gunslinger Girl. When illustrating characters, Arakawa states that Scar became one of the easiest ones to design. As a result, Arakawa comments that rather than being a common 'evil antagonist', Scar's character resulted from several catastrophes that occurred in the Ishvalan Civil War and therefore, such a label should be avoided. This is represented in Scar's revenge against State Alchemists as he ironically uses alchemy like them in order to kill them despite being a taboo for his religion. The major conflict between Scar and the State Alchemists is based on Hiromu Arakawa's own background when she lived in Hokkaido, as her ancestors conquered the land belonging to the Ainu people, but some of them were Ainu themselves. Similarly, his character was received positively by publications from manga and anime, who find him as an atypical villain in the series. Therefore, she regards Scar as a complex character as his hatred spanned from the Ishval's civil war. Scar was created by Arakawa in order to represent the continuous encounter that happened between people from Hokkaido and the Ainu.

As the series continues, Scar's backstory is further explored and he questions his motives, eventually joining the side of the Amestrian State military, assisting in an armed coup against the government in order to defeat the organization secretly responsible for the Ishvalan Civil War. His alias is derived from the prominent X-shaped scar that decorates his brow with his birth name being unknown. Scar hails from the region of Ishval whose people were almost exterminated in a previous civil war against the state military, most notably their alchemists. Scar is introduced as a villain who targets alchemists working for the state military from the fictional country of Amestris. Scar ( Japanese: スカー, Hepburn: Sukā), also known as Scarred Man ( 傷の男, Kizu no Otoko), is a fictional character from the Fullmetal Alchemist manga series and its adaptations created by Hiromu Arakawa.

Full metal alchemist scar