A/N: I appreciate the reviews, I really do. That at least lets me know someone is reading my stuff. However, I studied Greek Mythology all through high school and some in College and Nemesis is the Greek Goddess of Justice. She's also the goddess of revenge, but that comes later in the story. So if I'm wrong then so are all the books and web pages I used to study Greek Myth. But oh well, either way it's my story. Athena is the goddess of strategic warfare. Anyway, please keep reviewing, as I said, I do appreciate it. And, just for another note, those of you who said Astraea is the goddess of justice, you're also right. However, Nemesis and Astraea are the same goddess.

Book One: Sibling's Bond

Chapter one: Warnings

Zero Omega walked through the familiar halls of the Hunter HQ. His destination was Dr. Cain's office. Once he arrived he lightly tapped on the door, awaiting permission to enter. He stepped inside and looked around, slightly surprised that some of the other Hunters hadn't been called as well.

"You sent for me, Sir?" Zero asked, finally breaking the silence.

"Have a seat, Zero." Cain offered politely. Once the Crimson Hunter was seated, Dr., Cain began speaking again.

"Sigma has been spotted, but so far he's done nothing wrong."

Zero frowned. "He's probably plotting something as we speak."

He paused. "Why aren't the other Unit Leaders here to hear this, Sir?"

Dr. Cain sighed. "Because, Zero, out of all of my Hunters, you and your sister and X are the ones I'm most worried about. However, neither X Nor Nemesis could make this meeting, so I'm giving you the information"

Zero blinked. "Us? Nem, X and I can take care of ourselves.And we always watch each other's backs."

The Doctor smiled. "I know you can, Zero. And I'm not saying any of you are weak, far from it. But you, Zero, made an enemy of Sigma long ago. That rivalry and hatred probably doubled when he turned Maverick and you took his place as leader of the Hunters."

Zero nodded, waiting for the Doctor to continue. He does have a point.

"And X has defeated him twice. Sigma never was one to forgive or forget, even when he was a Hunter."

"Nemesis helped." Zero said, feeling the need to stick up for his sister.

"Ah, yes. Nemesis." Dr. Cain paused again. He was suddenly very interested in the papers scattered on his desk. "I fear that I am most worried about her."

"Why?" Zero asked, still defensive. "You just agreed with me when I said we could take care of ourselves. That included Nem."

Cain held up his hand. "I'm not saying she's weak, Zero. On the contrary, she's proven herself many times. It's just..." He sighed. "Sigma has been smitten with her from the beginning, or didn't you notice?"

"Nem and I tried to ignore it." He smirked. "That really ticked him off."

"I'm sure it did." Cain said with a small smile of his own. "But that is a danger in itself. Besides, Nemesis is a special kind of Reploid, her existence is another step in breaking the barrier between humans and Reploids. Sigma may see her as a bond between our two worlds. Just watch out for her."

"I will Doc, I always do anyway."

Dr. Cain nodded. "I know. Make sure you fill X and Nemesis in on this. They need to know as well."

Zero nodded, stood, then turned and left the Doctor's office in search of his sister and his best friend