After the success of Frank Castle, aka the Punisher, in the Netflix series 'Marvel's Daredevil', Marvel and Netflix have decided to spin off the character into his own series.
In 'Daredevil', Frank Castle (Jon Bernthal, Shane on 'The Walking Dead') is an American soldier who returns from Afghanistan only to see his wife, son, and daughter caught in the middle of an undercover drug bust sting gone bad. He survives the experience and goes on to become a one-man army, taking on the three mobs that were present at the drug bust.
Killing dozens of people brings him to the attention of Daredevil (Charlie Cox), who attempts to stop him. The blind hero succeeds and Castle is brought to trial. However, he undermines his own defense and is thrown in prison, where he meets the Kingpin (Vincent D'Onofrio). The Kingpin engineers Castle's release so that he can go out and kill more criminals... and weaken the New York Underworld so that the Kingpin can take over when he leaves prison.
When last we saw Castle in the second season of 'Daredevil', he had discovered that his superior in Afghanistan was the mysterious Blacksmith. Castle killed the man, took his weapons, donned a black shirt with an x-ray of Castle's skull after he was shot in the head and survived, and saved Daredevil when he confronted the Hand, a mysterious Asian society that was seeking to take over NYC. Nicknamed the Punisher, Castle then slipped back into the shadows.
No word on whether Punisher' will be part of Netflix's upcoming 'The Defenders' series, which will feature Daredevil, Jessica Jones, Luke Cage, and Iron Fist. The first season of 'Punisher' will film simultaneously with the third season of 'Daredevil', so the odds are that some type of crossover will occur.