Black Wyrm

"Hello, master. I am Project Battle Maid's Black Wyrm S9. Unlike other sisters, I specializes in single target protection in large-scale battles. We used to have kind and sensible personality unlike now. It was to have us protect our target regardless of our own safety by making us feel empathy toward our target. But precisely due to that, previous models put the targets in danger because of that empathy, and sometimes became useless due to emotional shock from their protected target's death. After many similar situation, our previous models were retrieved, and were implemented with emotion control module to keep the personality stoic. There were some customers who complained, but most were satisfied due to increased protection success rate. ... I am satisfied as I am now. Protecting escorted target's my sole purpose. And for that, emotions are pointless." (https://lastorigin.fandom.com/wiki/Black_Wyrm)