Gladion it`s not part of Team Skull, he's only taking their side. He even has any symbol of them. And it's obvious that Gladion, Lillie and Lusamine are related.

And AEther are not what they seems to be. You feel it in your bones.

But where is Type: Null from? Team Skull is made of dumb grunts and they can't make such a thing.

So, here I go (It not a big thing): Maybe Gladion was gifted or steal T:N from AEther (I can see you Faba), because it's part of AEther plan or Gladion don't like what AEther are doing.

Discuss.