I feel like his wake-up taunt would be him pointing his finger like this: http://imgur.com/a/9h6A0
And then he'd probably have a variation of it where he picks up his opponent with his foot.
Thats what I was talking about. So far I don't think we've had a wake-up or charge taunt that physically interacted with the opponent so I wonder how they'd do it.
Judging from the spinning DLC punch we got with the HoF pack, I could see a different variation of the Black Mass with the pick-up animation being part of the move itself, so it'll probably be a grounded heavy strike to an opponent with torso on the mat.