User blog comment:Krauserlols/Kha's IQ posible evolution above normal void lv/@comment-3112744-20130502044121

Don't forget that the League keeps Cho'Gath locked up, but merely supervises Kog'Maw. Kog'Maw is surprisingly benign, and Cho is clearly more of a threat to...everyone, but I'm not sure where Kha'Zix stands. What purpose does he have aside from getting Rengar? How much of a threat really is he to Valoran?

The other factor to consider is Malzahar. Kog'Maw is pretty much his pet, and Cho would be if he weren't imprisoned, but there doesn't seem to be much of anything tying him to Kha'Zix.

The Voidreaver simply needs more of his story to be told.