Gaia was an elite member
of the Secret Society; a criminal organization that sponsored the Toshinden
tournaments. However, when one of his co-workers, Uranus, learned that
he had held the first tournament without the approval of the organization,
she branded him a traitor and marked him for death. However, he escaped
and went into hiding.
One year later, Gaia received
an invitation to participate in the second tournament. He reunited with
his long-lost daughter Ellis
and entered the tournament with her, hoping to get revenge on Uranus. At
the end of the tournament, they were successful in destroying her and the
Secret Society with the other fighters. However, Gaia then discovered that
he was being targeted by the Organization, a long-time rival group of the
Secret Society. He entered the tournament hosted by the Organization with
Ellis, in order to help bring it down.