Amanda Waller Nicknamed "the Wall". Amanda Waller was a  congressional aide and also government agent.Waller was placed in charge of the Sucide Squad it is  a semi-secret government-run group of former supervillains working in return for amnesty. Waller was the leader of the covert-ops organization, Checkmate. Waller later moved on to be a Secretary of Metahuman Affairs under President Lex Luthor, before being arrested in the wake of Luthor's public fall from grace. Waller was recently reassigned to the leadership of Checkmate as White Queen, but has been forced to resign because of her involvement in Operation Salvation Run.