4x24 - Dragon Ball Z: Dragon Box

At length, Cell shows up at the ongoing battle between Piccolo and No. 17. Piccolo stands paralyzed before the overwhelming power of Cell. Cell starts to attack No. 17 and No. 18 so that he can absorb them and attain his perfect form!! If Cell attains his perfect form, there will be no stopping him! Piccolo challenges Cell, ready to give up his life, but he is unable to inflict any damage on him!