[...A sigh, and then she figures the only way she can explain this is to tell it directly]

Some time ago, my f- a dear friend of mind had something like a "replica" made of him. But this copy, this... copy, I suppose... was formed entirely of darkness. The fiend which was made was everything that L- my dear friend was not. Where my friend was a hero, the creature born was a villain.

What made them up was entirely different in that respect.