Anger
Bai Zemin did not know how the matter of races worked in Eventide World, nor did he know very well how they viewed each other. However, as in most cases, any intelligent race would in theory be considered an enemy by another intelligent race.
Why? It was very simple; resources, power, control, land, etc.
Just as humans fought each other to gain more control over a territory and thus monopolize the resources of that territory, it was only natural that humans would also fight against other races and vice versa.
When Liam entered the arena, the noisy stadium fell silent for a few seconds before several murmurs slowly began to rise up among the crowd viewing everything from the stands.
"Uh?"
"Th-Those red eyes are...."
"Demon...?"
"Why the hell is there a fucking demon here?!"
...