Abel's older brother from "Ye Olde Testament". He smashed Abel's face with a big-ass rock, and was then doomed to a miserable existence by God.
God: "Kain, where is Abel?"
Kain: "I don't know. Am I my brother's keeper?"
God: "You smashed his face with a rock, didn't you?"
God: "You're f**cked."
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