The Fate of the Universe

This is the first and only Star in Bowser's Galaxy Reactor, also referred to as Bowser 3.

The individual level world records are 4:48.550 by Tibs for Mario, and 5:18.367 by Mr. Cloud Kirby for Luigi.

Additional Notes

It is worth keeping in mind that if you decide to go for the early spotlight cycle in 120 Star, it will be a bit more difficult in Bowser 3 #2 due to skipping cutscenes, which affects the spotlight cycles.