Ben 10: Alien Force, Season 2

Highbreed Supreme Commander:
You are mongrels, inferior life-forms. You're very existence is an affront to our purity.

Azmuth:
Can we dispense with these lies?

Highbreed Supreme Commander:
You accuse me of dishonesty. Your race is the Galvin, correct? - a slightly more intelligent form of pond scum.

Azmuth:
Don't be fooled by his posturing, Ben. They aren't attacking because of their supposed superiority. They're attacking because they're dying out. Their ridiculous belief in racial purity led to inbreeding, a loss of resistance to disease and, finally, sterility. This is the last generation of Highbreeds, is it not?

Highbreed Supreme Commander:
You are correct, vermin, but we will not perish alone.