Boy name

My boyfriends younger sister and step-sisters go to day camp, they started a new camp today.
Me: Did you make any friends at camp today?
Evie: I made some friends and some bad guys
Me: What are your friends named?
Evie: Nora (her twin sister), Lena... Rose. And maybe more.
Me: Very cool, they sound nice.
Evie: James is a bad mean girl. She's a bad guy.
Me: Oh yeah? Why?
Evie: She's got a boy name.