Bio:
Gun Jack, a fighting robot created by Jane (who was in Tekken 2) was made from Jack-2, which was destroyed the last game, however it has new features such as a pivot gun. With the robot finally rebuilt by physicist Jane, Jane can finally rejoice.

Description:
Jack-2 is reborn... When Jane, now a physicist, was eight years old, she was rescued from a bacteriological war by the Russian military robot Jack-2. However, Jack-2 was later destroyed by a satellite weapon as Jane, still a young girl, watched in horror. Jane, now 27, could not forget the nightmare of Jack-2 having collapsed beside her. She spent 10 years restoring Jack-2 to 90% functionality, but it seemed to have lost the human characteristics that set it apart from Jack. Jane worked hard analyzing the program in order to return to Jack-2 the gentle soul which had saved her life. Through detailed analysis, she found that most of Jack-2's programming was created by Mishima Industries, one of the subsidiaries of the Mishima Zaibatsu. Moreover, she discovered a hidden program... 'Project Gun Jack'. It laid the groundwork for a new weapon, a pivot gun. In order to restore Jack-2 completely, Jane had to approach the Mishima Zaibatsu and solve the mystery of the project. She quickly installed the hidden program and brought the newly dubbed Gun Jack to the Mishima Zaibatsu.