Maybe he modeled you guys after demons or wanted you to evolve? Some demons I know DO look SOMEWHAT mechanical...

[ Hrm... ]

But mostly they're biological. Could be related to data either way; in my world, the demon virus was basically an altering of a human DNA structure on a level so small it was past molecular, so they could only think to refer to these particles as "data". That data... composes everything, and can be written to a "disk". That disk was how I infected myself.