Power Unknown! Android 16 Breaks His Silence! (実力未知数！寡黙な戦士１６号、動く Jitsu-ryoku Mi-chisū! Kamoku na Senshi Jūroku-Gō, Ugoku, lit. "Unmeasured Power! The Silent Warrior #16, Makes his Move") is the seventy-fifth episode of Dragon Ball Z Kai. Its Japanese air date was October 3, 2010. Its American air date was July 21, 2011. Its Dragon Ball Z counterparts are "Silent Warrior" and "Say Goodbye, 17".
As Cell attempts to absorb Android 17, Android 16 steps up to fight Cell, stating that they have almost equal power. Android 16 rips Cell's tail off so that he can't absorb the Androids, but Cell, having Piccolo's DNA, is able to regenerate it soon after.
16 then fires his powerful move Hell's Flash, temporarily stunning Cell. While Cell is underground, Android 17 says he'll finish the job. But Cell sneaks up behind him and absorbs him, reaching his Semi-Perfect form. After sitting on the sidelines for a while, Tien Shinhan fires a Neo Tri-Beam at Cell so that Android 18 can escape.