Disclaimer: I do not own Harry Potter and never will. The series and characters belong to the brilliant mind of JKRowling, and I do not make any money off of this.

Title: Advocatus Diaboli
Characters
: Severus Snape, Sirius Black, Harry Potter (Black), Lucius Malfoy, Narcissa Malfoy, Remus Lupin, James Potter, Lily Potter, Julian Potter, Draco Malfoy, Blaise Zabini, Alana Emerson, Ron Weasley, Hermione Granger, Voldemort and Simoné Zabini
Pairings
: Sirius/Severus
Rating
: M
Chapter
: 1
Genre:
Drama/Supernatural
Words per Chapter:
2,590
Warnings
:vampires, werewolves, AU (Big time), slash, entire vampire and werewolve structure and society, political intrigue, Voldemort times, supernatural confrontations, OC's, seers, and whatever else this demented author comes up with.
Summary
: Harry wasn't who people believe; he's really a vampire prince. Yet, his life wasn't the same. What can a young vampire do when he's faced with a school, coronations and a dark lord who wants his people?
Notes
: This series is was created in a sociology class and the title is Latin for Devil's Advocate. I also dedicate this chapter to a certain cat girl who has been reading my stories for the past year.

Chapter 1

Three people stood in a dark, dreary room. The room itself looked like something out of a dungeon. The walls were made of large, black stones and the floor was made of the same material. Two people stood towards one wall, but it was difficult to see what lay between them. They acted as if they were standing guard over something. The other man stood closer to the centre, allowing the light from the single candle to hit his face. It became apparent that the man was Sirius, and in his arms was a little infant. Sirius took a step forward, stepping into a large red circle. The symbols and runes all around the circle, including the circle itself, were made of blood. This didn't disturb anyone in the room, and the child couldn't sense what was about to happen. The little infant didn't have any idea what was happening.

Sirius looked at the two men and nodded at them. "Keep a good watch on that door you two. Lucius, Severus I'm counting on you." The two nodded and stood as still as statues at the door. Sirius walked into the middle of the circle and set the infant down. The little boy began to shift as he heard the door across from him get sealed shut. It had been closed before, but either Lucius or Severus had put a protection spell around the door. This was necessary. Without those protection spells, the ritual could either leave the room, or it would attract the attention of people they didn't want to attract. Nobody knew exactly what was taking place in this stone room, and they wanted to keep it that way.

Sirius kneeled on the floor in the middle of the circle, still using a standing like posture. He pulled a dagger out from the sheath that hung at his side. He held the dagger in his hand tightly, readying himself for what he had to do. He steadied himself and when he flashed the blade of the dagger, a light flashed through the circle, illuminating the room. The light was a soft orange, a colour that meant that the circle was ready for what they were going to attempt.

The light disappeared, leaving Lucius and Severus with their eyes held tightly shut. They opened their eyes after several moments and watched as Sirius muttered to himself, ready to bring the knife down when he was meant to. Sirius closed his eyes and took a deep breath. The single candle helped glisten off of the shining surface of the dagger. Sirius only held it, letting himself focus upon what was in front of him. He looked up at Lucius and Severus. The two of them nodded for him to continue.

Sirius turned his grey eyes onto the little infant and smiled at him. "Aienaq sesze a fenequt." He shifted the dagger and readjusted his kneeling position. His eyes never left the little form in front of him. He smiled at the child, glad to see that the babe wasn't reacting badly. "Aienaq lenorl aierole." He brought the dagger to his hand and sliced across it deeply. Blood began to well up in the cut. He held the cut over Harry's mouth. The child had begun to cry the instant the scent of blood hit his tiny nose.

The blood dripped into the child's mouth. The babe instinctively swallowed the red substance, no thoughts to anything other than the taste it was enjoying. "Besentoti rolanofes conac aienaq ti." A light started to glow weakly around the two of them. The stronger of the two glows fell around Harry, the little infant still crying, but not as strongly as before. Sirius clenched his bleeding hand, letting the blood flow through the gaps in his fingers and continue dripping; some fell on Harry's face.

"A zeneia aierole iscentow," Sirius chanted. His voice gained more pitch and strength as he continued. The light around the two became stronger. He was feeling the effects of what was happening around them. He could feel the energy ready to reach its breaking point. He only had to say the last piece and it would reach that. It would be powerful and the energy would escape into madness. It would seal everything he was doing. "Denyo a sfenaqu aienaq ouq, tenash." Finally the light that had been slowly getting brighter reached its peak.

The two people in the circle were engulfed in light, not only from themselves, but from the symbols, runes and even the circle itself. Neither Lucius nor Severus could see the child and Sirius. The light engulfed them completely. The white light that slowly turned red and then black surrounded them; the colour spectrum was represented in that light. The two bodyguards waited, not knowing how what they would expect when the light finally died off.

One finally flash of light bombarded the vampire eyes and disappeared, leaving the two guarding the door temporarily blind. When they could see a lot easier, they looked and noticed that Sirius was still kneeling, his hand healed and the dagger lax in his fingers. He frowned slightly and shook his head. The circle that had been surrounding them from all sides was missing. All that was left was a clear stone floor. They watched them, as Sirius did nothing for several minutes.

He finally put the dagger back in its sheath attached to his belt and picked up the little child. He smiled softly at the child. The ritual hadn't taken as long as he thought it would. This had been because there had been no interruptions. The lack of interruption had helped quite a bit. The people who had done that ritual had never managed to keep the space they wanted to use uninterrupted. By that, it meant that they could erase bits and pieces from those that interrupted. There were only meant to be two people who would be safe, apart from the caster, and those were the two witnesses to the event that was taking place. Lucius and Severus were Sirius' witnesses to this event. Sirius cradled the little infant in his arms, and carefully he stood up.

"Sh…It's alright Harry, that's all over," Sirius whispered to the little baby. Harry, as that was the child's name, looked into Sirius' eyes and quieted down, snuggling into Sirius' arms. Sirius took a look at Harry, his smile becoming all the more powerful. He could see that Harry's little green eyes were no longer green; instead they were a hazel colour that had speckles of grey in them. Any features that had been Lily's were now gone, replaced with his and James'. Sirius was happy.

He walked over to Lucius and Severus. The two watched him intently, waiting for any signs that they may speak. It took time, but they finally reacted. Their reaction was to move to the door. The two stared at each other strangely. They hadn't expected to reach for the door at the exact same time. Sirius looked at them and chuckled. "Well, isn't this amusing Harry? At least I don't have to worry about them flinching anymore. You look nothing like the bitch. You're just my son now Harry, you have no piece of her left in you."

He tickled Harry's stomach. The little infant giggled happily at the tickling and snuggled even more into Sirius. Sirius let his smile widen ten fold. "You're such a happy baby, now that there's absolutely no human in you, you're a normal vampire child." He then placed Harry against his stomach, making the back of the naked infant visible. On his back was the circle that had once been on the floor. Sirius nodded. Resettling Harry in his arms, he smiled once again.

Lucius looked at him and got the door, letting Sirius walk out. Sirius did so, still watching Harry. Lucius had to shake his head. "Why did you use Lily Evans…Wait…I mean Potter, to get your son?" He was slightly confused about that. It wasn't everyday that someone came in with a child that they had used to get with a potion.

Sirius looked at Lucius and shrugged. He didn't have an answer. Severus was on the other side of Sirius, flanking him for a bit. He didn't respond. Sirius turned his head and looked at Severus. He had no idea how he was going to respond to Lucius' question. Finally, he decided to try for as honestly as possible. "James is straight Lucius, what was I supposed to do? I like James, but he'll never see me that way. So, I get Lily to unknowingly take a potion that when she has sex with James, it puts both mine and James' DNA and it ends up combining the two." He tickled Harry's stomach again. The little boy giggled and yawned, starting to fall asleep.

Lucius gave Sirius a curious look at that. He looked at Harry and saw the boy's eyes drooping. It was strange. He wasn't normal, even after this. There was something off about him, something that he wasn't sure he could explain. Thinking for several moments, Lucius put the thought out of his mind. He ultimately decided that he was just thinking way too much about the situation that was at hand. "It's obvious that the potion wasn't perfect. If it had been, you wouldn't have needed to use that ritual to purge any of Mrs. Potter's DNA out of Harry here." Sirius only scowled. He didn't like that thought, and being reminded of it wasn't helping him in any sense. Sirius only began to rub Harry's back, watching the little boy begin to fall asleep.

Severus looked at Sirius again. He let a curious look cross his face ever so briefly. "What do you intend to call your son?" Sirius looked at him, giving him a look of, 'isn't it obvious.' He then smiled briefly and looked at Harry again. The boy was sleeping soundly in Sirius' arms, and Sirius felt ecstatic about it. He was glad that Harry was with him and nobody else.

"I'm only going to change his name to Henry. I think Harry is an adorable nickname. As for his last name, that's obvious his name will be Black. He's my son and heir." Both Severus and Lucius exchanged glances with each other.

"Henry? That's an interesting choice. I would have believed that you would want to give him a name that's normal for your family," Lucius pointed out. Sirius glared at him, which promptly caused Lucius to back off. He wasn't about to argue with Sirius, the man was his superior. He couldn't argue with him, well he could, but that might get him into a lot of trouble.

"You've seen the names people in my family end up having. I don't want him growing up with any of those issues. Plus, he's been Harry for months; so changing his official name to Henry is easier. At least I didn't choose Harold, that would have been much worse." Lucius nodded in agreement. Severus was careful to not say a single word on the matter. He wasn't about to comment on the matter that fell before him. He was getting enough amusement out of watching Lucius make a fool of himself in front of Sirius. He wouldn't add his own comments, though he did agree with Sirius on the name.

The three passed many other people in the household, they all looked at Sirius with interesting looks. It was well known that Sirius was to have a son, but first he had to get him. Sirius couldn't keep everything from the vampires. It was their rights as his subjects to know the truth. Sirius was very forthcoming with the information, so it wasn't that much of a fight to get the answer out of him.

One person with black hair walked up to the group. This was Richard Zabini, the foreign ambassador for the vampires. He smiled at Sirius and stopped in front of the man. He bowed low, giving Sirius the respect his station deserved. When he was standing straight once more, he noticed that Sirius was carrying an infant. He smiled. "Is this the child we have been waiting with eager patience?" Sirius nodded in response. He was glad that his friends could easily accept this child, even if the child was to hold a specific status.

"Yes, this is my son Henry. We just finished the ritual removing the human woman's tainted blood." He scowled once more. He was quite amused really. He was glad that she had no claim on Harry anymore, plus the memory alterations made it all the more easier. He was beginning to believe that the day couldn't get any better. Of course, it was almost the end of the day, so that didn't really matter.

Richard nodded with a smile. "Congratulations then. I do hope that my son and your son get the chance to meet. I'm sure they would become great friends." Sirius gave a smile and nodded. He was quite certain that Harry would be a child that would get along with both Blaize and Draco. Simoné on the other hand was a factor he didn't know, but he wasn't about to make assumptions. There were many things to think over before he jumped to any conclusions.

A/N: For the record, all the words that either look like they're made up or a foreign language, came from my own mind, and here's the translation. So yes, this is a language I've been working on, it just happens to look strange.

Aienaq sesze a fenequt: my blood of fathers.

Aienaq lenorl aierole: blood of vampires.

Besentoti rolanofes conac aienaq ti: remove the filth of human from this child's blood.

A zeneia aierole iscentow: I beseech the vampire gods.

Denyo a sfenaqu aienaq ouq, tenash: I offer up my blood to you, take it.