From the dragonball universe, Android 18 is a human remodeled as an android by Dr. Gero. She becomes a good guy after Gohan defeats Cell. Android 17's twin sister, one of the androids created for making Cell perfect. She is slightly less powerful than 17. She becomes Krillin's wife, and has a kid with him named Marin, much to Goku's surprise. She uses computer speak every now and again, demonstrated in her amazement to how Vegeta became so much stronger in such a short time, after training in the Hyperbolic Time Chamber, saying "It just doesn't compute 16, there's just no way".
Android 18: Whoever owns these clothes should have their optic sensors adjusted. They are obviously malfunctioning.
Said when looking at Chi-Chi's outfits.