Now Cathy knew the first-generation Alpha and Zero were direct descendants of Savannah Paxton. But the next generation did not necessarily come from the descendants of Savannah Paxton. They make a person Alpha or Zero if that person sincerely cares for their miss, no matter if one was from Paxton or not.
The first generation 'Alpha' was Savannah's fourth child, and Kinsey Paxton was a second-generation 'Alpha.' He was Savannah Paxton's grandson. While the first 'Zero' disappeared without a trace, they, therefore, raised someone to become the second Zero. Until now, Zero II has never appeared, and no one knows his existence. Likewise with Alpha III.
"So, Alpha Zero is currently working together to protect me?"
"Hm. But what they do is very different. They work together, but they are never seen together. Their way of working is very different. Alpha only focuses on protecting while Zero attacks or destroys." Vincent explained.