Mishima Zaibatsu is a company run by the Mishima Family.
They rival with the G Corporation.
People who have had control over the Mishima Zaibatsu at some point or another are:
Related ThreadsKazuya Mishima and Heihachi Mishima... Who's the real bad guy? - last post @ Dec 1, 2013
Commanders of Mishima Zaibatsu - last post @ Aug 23, 2008
If you own the Mishima Zaibatsu, what would you do with it? - last post by @ Feb 27, 2006
When exactly was Kazuya Mishima brought back to life? - last post @ Aug 24, 2013
If no Mishima/Kazama wins Tekken 6.... - last post by @ Dec 20, 2009