#1 Aleister Black
Talk about a way to make an impactful return to the ring. Black's taking out of the security guards, especially the Black Mass he hit on the security guard coming out of the door made quite the splash. Running to the ring, and taking out a cameraman on the way added to the sense of urgency in the scene. Sliding into the ring and quickly taking out Lars Sullivan with a Black Mass also looked frightening.
The intensity with which he turned to Regal and shoved him into the corner stole the attention of the audience. This all allowed for Johnny Gargano to complete his heel turn, hitting Black from behind and revealing himself to be Black's mystery attacker.
While the scene Black interrupted was getting interesting, I cannot wait for how the title picture will look like come TakeOver: WarGames. Black made the scene and upped the tempo with his ferocity.