By traveling back in time, you thought you could change the events of the future, didn't you? Well, let me assure you that you were successful...though not quite in the way you planned. Rather than prevent the world's destruction...ha ha ha ha ha ha ha ha ha...you've guaranteed it!
S5 E25Ghosts From Tomorrow
You can not win Cell. I'm gonna make sure that all androids are gone for good!
Impressive. I must admit you have exceeded me Trunks. At least in the area of brute strength. Heh heh. And yet, you have absolutely no chance of defeating me.
S5 E26The Cell Games
What a disappointment you are. You're so pathetic, I can't even test my complete power on you.
Are you finished yet, or are you going to get up and entertain me some more? Heh heh heh heh heh heh heh heh heh heh heh heh heh heh heh heh. Get up. Or I'll put you down permanently.
You said you'd show me true Saiyan power. But all that you've done is pump up your little muscles. And there's nothing special about that. I could do that too if I wanted.
You can finish me if you want. I've failed.
Hmm...how very gracious of you.
Wait. Tell me. What is the real purpose of this tournament? What are you really going to do? Cell, I know what you androids are like. I'm sure this is some sort of a trick. Just a trap to get us all in one place, right?
Oh, must you always treat everything like it's the end of the world? There is no secret purpose. I simply want to get as much out of this planet as I can before I destroy it. I have proven that I am unstoppable. Neither you or your friends are any threat to me now. However, there is one that I want to test my complete power against. I want you to bring me Goku. This tournament is sure to be a guaranteed hit. Everyone will be watching me. I just can't wait to see that look of panic and fear.
Eh!
That's it. That's the look. Ha ha ha ha ha ha ha ha! Until then.
These quotes come from Wikiquote's Dragon Ball Z pages and are available under the Creative Commons Attribution-ShareAlike License.