Question: Who stars in John Stephens' TV show Gotham?
Context: John Stephens is an American television producer, screenwriter and director best known for his work on "The O.C.", "Gilmore Girls" and "Gotham". "Under the Knife" is the twentieth episode of the television series "Gotham".  It premiered on FOX on April 20, 2015 and was written by John Stephens, and directed by TJ Scott.  In this episode, Gordon (Ben McKenzie) and Bullock (Donal Logue) continue to track down The Ogre.  Meanwhile, Bruce (David Mazouz) digs deeper into Wayne Enterprises' corrupt board and Nygma (Cory Michael Smith) makes an unexpected move. "Mad City: Better to Reign in Hell..." is the first episode of the third season, and 45th episode overall from the Fox series "Gotham".  This is also the first episode in the series with the subtitle "Mad City".  The episode was written by executive producer John Stephens and directed by Danny Cannon.  It was first broadcast on September 19, 2016.  In the episode, after seeing that Lee has been moving on with another man, Gordon leaves her.  6 months later, he has been working as a bounty hunter dedicated to catch Indian Hills' monsters.  After an offer of a million dollars from Cobblepot for Fish Mooney, Gordon sets out to find her as she is leading the monsters.  Meanwhile, Bruce and Alfred return after laying low and prepare to confront Wayne Enterprises about their role in Indian Hills.  The episode's title is a reference to John Milton's poem, "Paradise Lost". "A Dark Knight: Pax Penguina" is the first episode of the fourth season and 67th episode overall from the Fox series "Gotham".  The show is itself based on the characters created by DC Comics set in the Batman mythology.  This is the first episode with the new subtitle "A Dark Knight".  The episode was written by executive producer John Stephens and directed by Danny Cannon.  It was first broadcast on September 21, 2017. Gotham is an American crime drama television series developed by Bruno Heller, based on characters published by DC Comics and appearing in the Batman franchise, primarily those of James Gordon and Bruce Wayne.  The series stars Ben McKenzie as the young Gordon, while Heller executive-produces, along with Danny Cannon, who also directed the pilot. "Mad City: Beware the Green-Eyed Monster" is the eleventh episode and mid-season finale of the third season, and 55th episode overall from the Fox series "Gotham".  The episode was written by co-executive producer John Stephens and directed by Danny Cannon.  It was first broadcast on November 28, 2016.  In the episode, Gordon discovers that Mario is infected and needs to stop him before he marries Lee, but Mario is one step ahead of him and plans on making it look like he is jealous.  Meanwhile, Nygma receives information about Isabella's death and despite shrugging it off, he is certain it could be true.  Bruce, Selina and Alfred plan on infiltrating a Court's building, receiving a surprising help. "The Balloonman" is the third episode of the television series "Gotham".  It premiered on FOX on October 6, 2014 and was written by John Stephens and directed by Dermott Downs.  In the episode, detectives Gordon (Ben McKenzie) and Bullock (Donal Logue) track down a vigilante who is killing corrupt Gotham citizens by attaching them to weather balloons.  Meanwhile, Oswald Cobblepot (Robin Lord Taylor) returns to Gotham and gets a new job close to an influential figure in the underworld. "Wrath of the Villains: Pinewood" is the eighteenth episode of the second season, and 40th episode overall from the Fox series "Gotham".  The episode was written by co-executive producer Robert Hull and Megan Mostyn-Brown and directed by executive producer John Stephens in his first "Gotham" episode directed.  It was first broadcast on April 18, 2016.  In the episode, Bruce and Alfred set to find out information about a program called Pinewood Farms which had something to do with Thomas Wayne's death and involvement while Gordon sets out to find The Lady and Dr. Strange continues his experiments. "Rise of the Villains: The Son of Gotham" is the tenth episode of the second season and 32nd episode overall from the FOX series "Gotham".  The episode was written by John Stephens and directed by Rob Bailey.  It was first broadcast in November 23, 2015 in FOX. "The Fearsome Dr. Crane" is the fourteenth episode of the television series "Gotham".  It premiered on FOX on February 2, 2015 and was written by John Stephens, and directed by John Behring.  In this episode, Gordon (Ben McKenzie) and Bullock (Donal Logue) investigate homicides where the victims are killed with their greatest fear.  Meanwhile, Maroni (David Zayas) begins to question his relationship with Cobblepot (Robin Lord Taylor) after a tip.
Answer: Ben McKenzie