My name is Cell. I am an android.
You...you're an android?
I am the single greatest achievement of my creator Dr. Gero.
Ah, as I should've known.
S5 E4His Name is Cell
You see, the powers of Vegeta, Goku, Frieza, and so many others have already been incorporated into my being. But even these powers pale in comparison to the strength of the androids. It is this strength which I must possess for myself.
The computer told me one more thing. Once I have absorbed the other androids, I will be the most powerful being who has ever lived.
But what for? You were already the strongest creature alive in your time.
This is true. But my design was meant to include the powers of Androids 17 and 18. Without them I can never be complete. I had to seek them out. It's what I was created to do. Of course, it may also be the blood of Vegeta and Frieza coursing through my veins which fuels my desire for more power.
I will never allow you to be completed. You're going down Cell. I intend to put an end to your diabolical schemes once and for all.
S5 E5Piccolo's Folly
[to himself] Trunks is here. Stupid boy. As if being killed by me in his own time wasn't enough. I don't understand why creatures so defective are ever allowed to live. Oh well. It will soon be corrected.
[to himself] It seems too incredible to imagine. With that union, Piccolo has become more powerful than I am, even as a Super Saiyan. But that's impossible! He's nothing more than a mere Namek!
[Tien arrives] Piccolo, eh...I mean...Kami! Eh...no...uh...I mean that is...uh...uh...whoever you are, I'm trying to say that Tien is here.
Krillin, just call me Piccolo.
I hope you know how much I hate this outfit. I look like a cowgirl. Do you think we'll have the time to find me something better?
A1Android 17
I suppose.
[to himself] This cannot be happening. Every time I reach a new level of strength, a greater power appears to challenge my authority. It's as if fate is laughing at me with a big stupid grin, just like Kakarot.
S5 E6Laboratory Basement
Big deal!
Huh?
I say let him become complete. If Cell destroys the androids, he'll save me the trouble! And fighting one battle is much simpler than fighting four. I don't care how powerful he becomes. I'll still beat him!
Now, if any of you would like to take on Cell or the androids while I'm away, be my guest. I'll be back to finish the job once you fail. [Vegeta leaves]
[about Vegeta] Sometimes, he really gets on my nerves.
Well, it looks like the designs for Android 17.
Android 17? I don't mind telling you Trunks. That thing scares me. It's those eyes of his you know, there's something about them that's just...creepy.
Listen Trunks, I don't wanna be the bearer of bad news, but I don't think Vegeta will let ya train with him...he's very uh...independent.
Wow. It looks like these androids are made up of organic substances patterned after human cells. So that's how it's possible for Cell to merge with them at a cellular level.
Uh...what?
S5 E7Our Hero Awakes
Ha. It's Krillin. How did you know I was here?
I could smell you from a mile away.
These quotes come from Wikiquote's Dragon Ball Z pages and are available under the Creative Commons Attribution-ShareAlike License.