Alpha

Alpha (Alan Tudyk), formerly Carl William Craft, is a rogue Active who escaped the Dollhouse. Before coming to the Dollhouse, he was a prisoner convicted of kidnapping and attempted murder. When the Dollhouse was starting up, it needed "guinea pigs"; he was able to reduce his sentence by agreeing to become an Active for five years. He becomes enamored with Echo once she enters the Dollhouse, and eventually attacks Whiskey so that Echo may become the most requested Doll. An accident causes a "composite event", in which 48 personalities are simultaneously imprinted on Alpha, along with the associated memories and skill sets. In his escape, he killed several Dolls and Dollhouse staff members, including Echo's previous handler, yet he let Echo.