In the Scenario Campaign, it acts as the private estate and hideaway of Heihachi Mishima, where he retreated after Jin Kazama took control of the Mishima Zaibatsu. Heihachi acts as the stage's boss and is guarded by agents wearing suits and sunglasses, only referred to as "Secret Service". This is also the stage where Lars Alexandersson learns about his past and about his relation to Heihachi Mishima.
Trophy/achievement: It's All Coming Back to Me.
- Secret Service Men
- Secret Service Women (blonde and brown hair)
- Claw Robots
- Red Armored Thugs
- Regular Ninjas
- Alien (only seen when taking the left path, more than one alien are seen in the online co-op version)
- G Corporation soldiers (online co-op only)
- Tekken Force soldiers (online co-op only)
- Combot Guards (online co-op only)
"Heihachi Mishima is, in fact, Lars' father. The reunion was unlike the idealistic images conveyed in popular media, but the trauma of fighting against his own father reinstated Lars' memory. We now have both the Mishima Zaibatsu and the G Corporation to face, extending our time for the mission".
This stage is also available in Street Fighter X Tekken as a multi-tiered stage. The first round has combatants fight on the rooftops, and in the second round, the combatants will battle at the balcony. If the fight reaches its final round, the combatants will fight on the estate's grounds. Multiple enemies from the Scenario Campaign also make an appearance in the background.
- This stage can be selected in the PlayStation Portable version of Tekken 6: Bloodline Rebellion when the player is in the ad hoc 2P mode.
- Lars is the only Tekken 6 fighter in this game to not be featured as a boss, a fighting partner later in stages (i.e. Lei and Zafina), or being rescued in some way (i.e. Julia). However, in the Tekken 6 Co-op version of this stage, he is fought as a boss after Heihachi is first.
- Kunimitsu makes a cameo appearance in the background of this stage.
- Mishima Estate is one of two stages (other being Urban War Zone) taken from Tekken 6 or the Tekken series.
- This is where M. Bison and Juri Han's rival battle against Heihachi and Kuma takes place.