User blog comment:Kallutofan990/Zoldyck family youngest brothers/@comment-7388020-20130912005739

In addition to what Jojo said, it's an interesting concept that Killua never became close to Kalluto because he seems like a mama's boy, whether he wanted to be or not. And as we know, Killua tries to kill his mother at one point, so that shows their relationship. I'd really like to see how Kalluto joined the Troupe, in some flashback at some point. Maybe it'd say he only joined to kill Gon or something.