He recruits new heroes along with older ones. The most prominent exception is the Batman, who resents Superman for leaving the world 10 years ago. Batman warns Superman that his idealist notions are outdated and his interference will only exacerbate the world's problems, insisting that strategy is required, not force. In response to Superman's Justice League, Batman activates his network of agents called the "Outsiders", made up largely of the younger second and third-generation heroes, while trusted veterans, such as Green Arrow and Blue Beetle, are chosen as lieutenants. Lex Luthor has organized the "Mankind Liberation Front". The MLF is secretly a group of Golden Age villains, including Catwoman, the Riddler, and Vandal Savage, as well as third-generation villains like Ra's al Ghul's successor, Ibn al Xu'ffasch, who is Bruce Wayne and Talia al Ghul's son. The MLF works to take control of the world from the heroes.