Apparently the people in the background of this stage is a reference to the Tag 1 intro : r/Tekken
Tekken Intro Movies On PS1! | These are also the videos that play on an arcade machine to get you to play it! Which Tekken was your favourite? | By Gaming Moments | Facebook
Tekken | Tekken Wiki | Fandom
TEKKEN - All Opening Cinematics (TEKKEN 1 to TEKKEN 7) @ 1080p HD ✓ - YouTube
Tekken 1 - Intro (PS1 / Playstation) - YouTube
Tekken 1 (PS1) - Arcade Opening - YouTube
What stages would you like to see return? (more then 1 intro/outro would be nice too) : r/Tekken