Designation K; K is a Disassembly Drone that looks like a Worker, but actually does this to hide the fact he's a DD, even though his size is an otherwise obvious giveaway. Incredibly, he's larger than an average DD, standing at 8' 9" (2.05 m).
He always wears a lab coat & a gas mask w/ a visor, even though the latter has next to 0 effect on him.
His Nanite Acid, instead of melting a Worker alive, makes said Worker behave like a wild animal for a few minutes.
He has red eyes, like Doll, instead of the normal yellow ones DDs have. His Nanite Acid is a fluorescent gray, instead of being yellow.
He flies only when no Worker Drones are watching, as doing so will reveal who he is to that Worker Drone colony.
He's affiliated with a science corporation, but won't say what corporation.