You mean the spy from the prologue? No, these are all new characters.

Though the guy in the bg of the second panel does look a little like him from far away… oops lol, I need to be more mindful of my background characters.

Humans are a lot more abundant than most species, given they have colonized the majority of the known galaxy at this point. There are a lot of aliens too, I just really haven’t shown all that much yet.