|BG Music||The Strongest Iron Arena|
Arena is a stage in Tekken 4. This fight is a cage match, as it takes place in a ring surrounded by metal bars. Spectators cheer the fighters on from outside of the ring. Also, outside of the ring, a screen will show you and your opponent fighting.
- In the Japanese version, there is a way to get rid of the bars around the arena. The player must first finish time attack mode and must then play story mode with the same character while skipping Heihachi's introduction. When the round begins, the bars will be invisible. You can leave the arena via ramp that Heihachi came down on. 
- Heihachi Mishima is usually fought here.