RC-01/138, also known as Delta-38, RC-1138 and Boss, was a clone commando in the Grand Army of the Republic during the Clone Wars and Imperial Commando Special Unit of the Imperial Army. He was nicknamed Boss by his fellow clones, and was the field commander of Delta Squad. He was the rank of sergeant.
RC-1207, also known as Delta-07 and Sev, was a clone commando and a sharpshooter in Delta Squad of the Grand Army of the Republic during the Clone Wars. He was often referred to by his nickname of Sev, especially by his squad mates, and was well known for his morbid sense of humor. Sev aided the Republic in a number of missions, fighting on planets such as Geonosis, Coruscant, Skuumaa, Mygeeto, Dorumaa, and finally Kashyyyk
RC-1262, also known as Scorch or Delta 62, was a clone commando in the Grand Army of the Republic during the Clone Wars. Among the commandos of Delta Squad he was often referred to as Scorch, he was considered to be Delta Squad's wise guy, and was often chided by RC-1140 known as Fixer, the squad's unofficial second in command.
RC-1140, also known as Delta-40 and Fixer, was an elite clone commando in the Grand Army of the Republic during the Clone Wars. Although he hated the use of nicknames, he was known as Fixer to the other commandos in his squad, because of his talent for fixing and slicing all things mechanical.