A "mysterious warning" aired on tonight's episode of NXT, teasing something for TakeOver 31:
The night vision video featured an unidentified person smashing a case with NXT title belts in it. A robotic voice said during the video: "I'm not sure what happened. I helped create something out of my own blood. Years and years of dedication -- only to be taken over by paper champions. These NXT championships have been in isolation for far too long. Now I've come back to take what is mine."
"10.4.20," which is the date for TakeOver 31, appeared at the end of the video.
WWE's YouTube description for the video said: "An unknown insurgent declares they’re coming back to the black-and-gold brand to take what’s theirs."
Three title matches have been announced for TakeOver 31. Finn Balor will defend his NXT Championship against Kyle O'Reilly, Io Shirai will defend her NXT Women's Championship against Candice LeRae, and Damian Priest will defend his NXT North American Championship against Johnny Gargano.