Originally published on ProWrestlingSheet.

He might still be a little kid, but former Raw tag team champ Nicholas is already training for his big WWE comeback ... and he's putting the locker room on notice.

Almost one year on from his shocking victory over The Bar at WrestleMania 34, WWE caught up with Nicholas to film a mini-documentary called "Nicholas: Where Are They Now?"

The video includes interviews with Nicholas' friends and family, as well as some backstage footage of him being congratulated by the likes of Triple H and Vince McMahon in the immediate aftermath of his title victory.

But that's not all. Towards the end, Nicholas reveals he's currently training for his comeback!

"I am a red belt in karate," he says as footage of him flipping over a power wheels car plays. "Sheamus and Cesaro are going to GET! THESE! HANDS!"

Watch the video below.