Alpha-27, also known as "Clark" or "A-27," was an ARC-Trooper who fought during the outbreak of the Clone Wars. He was apart of regimen program of first 100 ARC-Troopers designated Alpha-Class, who were trained by Jango Fett. He was also a comrade to Gohan, Conan, Goten, Alpha-12, Alpha-17, Alpha-47, Alpha-77, Alpha-78, Alpha-98, and several dozen ARC's and Commandos. Towards the end of the Old Republic and the rise of the New Order, Clark, become one of the few ARC's who joined Gohan's uprising in the fight against the Imperial Empire.