Laboratory is a stage in Tekken 4. This fight takes place in a locked down laboratory room hence the name of the stage. There is steam near the ground which is coming from vents below.
- In the side game Tekken Force, the first stage known as the "Military Compound" takes place in a different section of the stage.
- The Kazuya cutscene featured in both his and Jin's Story modes will take place in either this stage or Building.