Emma, Of course they are average. That is why they are Unspeakables. They are so bland and boring that as soon as you meet one, you've forgotten them. They seemed rather bored themselves when eating with us. Although, if given the choice, I wouldn't eat in the Great Hall with the other Houses either.
I, not have an aura? Oh dear. You have discovered my secret.
I am not human but a poltergeist. I had planned on waiting until school ended to tell you, but Peeves and I are running away as soon as possible to make our own little bundles of chaotic energy. If you like, you may be their godmother.
Millicent Bulstrode