User blog comment:Emptylord/Leaked Champion: Vel'Koz/@comment-3329904-20140118011021

I can confirm that for 99%, that HE is a male: http://forums.na.leagueoflegends.com/board/showthread.php?p=41228592 - That Xelanth comment popped up in my head when I heard that his name is Vel'koz- Xelanth says that one of the next champs was originally named "Velnath", and as the dialect of regular Void monsters names and the "Vel" in his name, and the fact that Xelanth said: "I hope you'll enjoy this champ when he comes out."

Just speculating.