Groupies
There were many groupies in Battledrome of the Sexes. This was since Peyton and Krystella were have a battle to decide which gender was better at playing Chaotic. Most of the boys for cheering for the male creatures, while most girls were cheering for the female creatures.
Sarah wasn't cheering on either, as she thought it was childish.
In a twist at the end, it turned out that Peyton was actually playing as the female creatures, and Krystella as the male creatures.
Fans and spectators are also often shown throughout other episodes, but they were most significant in this story.
Read more about this topic: List Of Chaotic Characters, Minor Characters