Clark had upgraded to a Grade D zombie?

Upon closer inspection of this arm, there were still some tattered pieces of skin hanging on it, but it was indeed mostly mechanical, interspersed with many blue neural networks.

"Clark!" A furious roar, and Harris crawled out of the crater. 

At this moment, she no longer had her former grace; she was battered all over, with injuries everywhere, looking extremely disheveled.

"You're actually a robot!" Although Clark had speculated before, seeing Harris in this state, which was somewhat different from a typical robot as she was bleeding red blood from her forehead.

"Strictly speaking, you're human, but part of your body has been modified into machinery. Did you undergo extremely severe injuries before, resulting in partial disability?" 

Ronald responded to the Grade C zombie while observing Harris, muttering to himself.

"Mind your own business. I'll kill him first, then deal with you!"