Gotham City's most notorious criminals emerge in Season Four, forcing GCPD Detectives Jim Gordon and Harvey Bullock to battle a cadre of depraved and unhinged Super-Villains, including Penguin, Edward Nygma/Riddler, Barbara Kean, Tabitha Galavan and Poison Ivy. But as the city sinks into chaos, a new hero waits in the wings. Young Bruce Wayne trains with Ra's al Ghul and, with help from his butler Alfred Pennyworth and former Wayne Enterprises executive Lucius Fox, dons a secret vigilante mantle to protect his beloved Gotham.