Jacob "Jake" Hager.
Skai jackson
Jack Merridew's real name is Jack. In the novel "Lord of the Flies" by William Golding, the character's full name is never revealed. He is simply referred to as Jack throughout the story.
Jack Roosevelt Robinson
It's Harkness, although that is not his real name, he stole the identity of the real Captain Jack during WW1. His real identity is unknown.
His real name is Thomas J. Black According to Oct 2003 GQ Jack said when he signs a bill at a restaurant, he signs it with his given name, Thomas Black.
Jack London! His REAL name is John London...
Jack Godfrey's real first name is John
Samurai Jack's real name was never mentioned in the series.
his real name is jack
Jack Post
Cactus Jack's real name is Micheal Francis Foley. Mick Foley
The Joker's real name is Jack Napier in the cartoon and 1989 film and he first appeared in Batman #1 in 1940.In the comics, the Joker is never given a full name, although the name Jack is used in "Batman: Confidential" issues 7 to 12 (2007).