Billy

"who's this guy, Well, Billy, of course, he kinda is a little bit of a bad influence to deal with in World War III, okay, that's too much".

--Su Ji-Hoon, a Big Girl's Imagination

Billy (French: Paulo) is Kayla's Brother, he is nine years old and loves to skateboard, he also has a crush on Brittany-Ann.

in When the Cold Breeze Blows Away, he joins the Coalition of the Red Star.

although Billy is a part of that group, Miss BG, Brittany-Ann, Kayla and Ian remain on Su-Ji-Hoon's side.