No, it's not Yhwach. Or Chair-kun. Or Yhwach's horse. Or his Moustace. Or Aizen. Or Shaz Domino. Or Orihime. Shut up. I'm getting to it. No, it's not Chad either.
It's Giriko Kutsuzawa, from the fullbringer arc.
His Fullbring, Time Tells No Lies, allows him to place timers on objects, forcing...