Scar

Scar, a complex figure with a troubled past, carries the physical reminder of his brother's obsession in the form of a tattooed arm. Shaped by the Ishval civil war, Scar's life revolves around seeking vengeance against state alchemists, whom he holds responsible for his home's devastation. Despite his intense desire for revenge, he exhibits selectivity in his targets, sparing non-state alchemists like Alphonse Elric during their encounters, showcasing a nuanced aspect of his character driven by his unique circumstances.