One thing I've been meaning to explain is the class system that's in place here.
There are four levels here.
3rd tier. That's where we all are. And where the majority of the prisoners are.
2nd tier. Higher class warriors. The only one who's appeared so far is Jetfire.
1st tier. The elite. Best of the best in the whole arena. There's less than a dozen bots here.
And finally the Champion, who is the one above everyone else. The undisputed king of the colosseum.
Each tier has a higher quality and more comfortable living space than the ones below them. And fighting between tiers is rather uncommon, and sort of a big deal when it happens.
Skywarp for example used to be in the 2nd tier. But was demoted when he lost to Gronius.