Mark did a double take. Either he was imagining things or the kid who was standing before them with his sea-green eyes said something about being the son of Poseidon.

"Did you say you're the son of Poseidon?" Mark asked. "The sea god?" Percy glanced at him with a curious look in his eyes. He smirked, not expecting Mark to put the pieces together.

"Yes." Percy answered simply. It freaked Sean out, mostly because of the dog actually listening to him and understanding what Percy had been talking about.

"We're like you? If that's the case, who are our parents?" Sean asked. Percy paused and thought about it before he shrugged like he knew nothing.

"We haven't figured you two out yet, but normally you would be claimed at twelve," Percy said. "Allow me to show you around camp," he turned to Alex. "Grover has been waiting for you. Talk to him." Alex stiffened, but nodded and made his way over to an open field where Grover was busy blowing on his reed pipes. Mark shook his head, unsure of what else to think. He couldn't even concentrate. All he could think about was his parentage. As far as he knew, most of his life involved his mother and his half brother working around the clock and going to different schools, even different military bases, since his mother was a nurse. He remembered asking his mother about his father, but she'd always say the same thing. That his father loved him and that he should be proud and not forget his heritage. Mark guessed that his mother didn't want him to know anything about his father, but now it was going to eat away at him until he could find the answers. They went on a tour around the camp. Mark and Sean saw some interesting things. From a rock-climbing wall with lava, down the hill he could make out an archery range followed by the other cabins. A basketball court lie in the middle of the camp with the cabins whose occupants wore the colors of their cabins. Mark glanced at Sean and saw how excited he was. The place was massive. Mark stared briefly at Sean's hellhound, Finbarr, who was following him and staying by his side as much as possible. It amazed him that Sean could get used to the area before he even knew about the entirety of his heritage.

***

Sean couldn't help himself. Everything was standing out to him, full of curiosity. Further down the hill he saw creatures with goat hindquarters, like Alex. A Satyr.

"Percy?" Sean started, his Irish accent escaping from his mouth. "What's a Satyr?"

"I thought Alex explained all this to you?" Percy said. Sean went silent. Sure, Alex had mentioned it, but he wasn't really listening or caring. "A satyr is half man and half goat. We always send them out to search for other demigods like us." Sean thought about it and figured that they had sent the most obvious answer was Alex out to search for them. They continued to tour until the group arrived at a large house outside. He saw another Satyr and Alex. Across from them he saw a man with a burly beard in a wheelchair. They were playing some sort of card game. Sean assumed it was poker.

"Mark and Sean, meet Chiron and Grover," Percy introduced them. "Chiron is our activities director and a centaur, Grover, is my best friend."

"A centaur?" Mark asked. "But you're in a wheelchair." Sean rolled his eyes and hit Mark on the arm, who frowned and rubbed it. "What? I didn't mean to be rude."

"Sorry," Sean said. "However, I just thought that maybe it would be best for you to not say anything right now."

"It's alright," Chiron said. "That's just my disguise. Welcome to camp half blood, where we train you to become not only strong warriors but also heroes," he continued. "Thank you, Percy, for bringing them here. You may go back to teaching sword fighting." Percy nodded and bowed out of respect before turning on his heels and leaving. Chiron allowed them inside where they sat down and Chiron explained everything. Sean sat on the couch while Finbarr curled up next to him. Chiron glanced down at the hellhound, then back at Sean. "Did that hellhound come to you with no problem?" Sean shrugged, remaining quiet and not willing to say anything else. He'd still be processing the entire situation. Although, the more they talked about it the more Sean slowly understood. The next thing that he knew, Mark and Chiron were staring above his head.

"What?" Sean asked. Sean looked up and saw, above his head, a helmet which also faded.

"What is that?" Mark asked.

"The helm of darkness," Chiron said. "I knew one of you had to be a child of the big three. Sean, you are the son of Hades," Chiron turned to Alex. "Alex, please show Sean and Finbarr to the Hades Cabin." Sean got up from the couch and followed Alex out of the house, leaving Mark alone with the Centaur.

***

Mark frowned. At least he knew what the claiming was. Mark watched as his friend left the big house to go around the camp and straight to the cabin. Chiron urged Mark to follow him and the two left the big house soon after and made their way toward the weapons building. Still, Mark was shocked that he hadn't been claimed yet. He hoped his father would finally claim him, even though it had been years since he last remembered his father. All he remembered was a hardcore smile, war worn. Not too far in the center of the camp, he heard someone yelling. Instinct took over, and he took off down the grassy hill, unsure of where he was going or even what he was doing. He needed to help the person.

"Mark?!" Chiron called out and followed him "Where are you going?!" Mark ignored Chiron's call outs, he ran as fast as his legs could take him until he arrived in front of a large warlike cabin with a lot of masculine people. The woman looked like she was a bodybuilder. Carrying a large sword in her left hand, she stood over a young boy about sixteen with elvish features and blue hair lying on the ground. The woman seemed to be unpleased with whatever the boy had done. Mark's protective side kicked in and he allowed a sword to appear in his hand. The bigger girl swung her sword down, ready to strike the boy. In a flash, Mark appeared and blocked the sword attack. He swung and pushed the woman back.

"Who are you?!" she exclaimed. Mark sliced down and disarmed the woman with the handle of his sword, her weapon landing in the soft dirt. Anger dripped in her voice. "Where did you come from, newbie?!"

"None of your business," Mark said. "You were yelling at the kid, so I had to keep you from hurting him."

"I will give you one chance to change your attitude." the woman with straight brown hair warned.

"Who are you exactly? What gives you the right to hurt this kid?" Mark demanded.

"The name is Clarisse La Rue, I'm the daughter of Ares, God of war," Clarisse glared. "And you'll regret ever getting in my way."