Alexander Stone

Alexander Stone is a Roman demigod, the son of mortal Jake Stone. and Mars, the Roman God of War. He is the Second Cohort of the Twelfth Legion and a legendary demigod leader of Camp Jupiter.

Early life
Alexander Stone was the son of Mars, the Roman God of War. He never knew who his mother was, only that his name was Jaqueline Stone, thus he took the man's surname. Mars named her son after Alexander the Great, one of the most famous conquerors of all time and one of the children of Mars. At the orphanage, it is suggested that Alex had always been an aggressive person, and apparently many of the other children at the orphanage were afraid of him. This made Alex recognise the concept of fear, and the very prominent capacity for violence in himself. When he was ten years old, he was moved from one orphanage to the next, where he was guided by Minerva through unknown means to the Wolf House, where he encountered Lupa, the Wolf Goddess who continued to raise him as her own among the other demigods who were trained at the Wolf House.

At some point, Alex met Jason Grace and the two of them trained together most of the time. Even though they were extremely close, they were also extremely competitive and were constantly competing to try and be better than the other, which Lupa recognised and sought to influence to make them stronger and fiercer warriors. It was established that Jason was the better fighter, but Alex was far cleverer and the better leader, which Jason respected. The two of them both made their way to Camp Jupiter after Lupa felt that she had trained them to the best of her ability. On the way to Camp Jupiter, Alex saved a young Octavian from being attacked by a Sphinx, wielding a sword that he was given by Lupa which he called Red Rain. After fighting off the creature, Alexander carried a wounded Octavian to Camp Jupiter, finding himself unable to heal him.

Camp Jupiter
At Camp Jupiter, Alex served as a centurion, with it being established early on that he was a natural warrior. His act of courage in saving Octavian meant that he passed Probatio early on, which only increased his confidence. He went out on a quest when he was twelve years old and during that quest he ended up rescuing two of his companions from drowning in a shipwreck, which earned him further recognition among the residents of Camp Jupiter. He continued to be friends with Jason and Octavian, but he couldn't stand the fact that neither of these people got along with each other - as a matter of fact, Jason and Octavian hated each other. Jason wanted to be a warrior, but Octavian preferred staying out of combat, since the encounter with the Sphinx had 'disillusioned' him to the dangers of warfare. At some point, Octavian did join Jason and Octavian on a quest, and he botched it by serving his own intellect as opposed to aiding the group.

Alex' himself continued to cover himself in glory in the number of quests that he took part in. When he was fourteen, he made it to the Second Cohort after his centurion wrote a glowing recommendation for him. At this point, Alex had already been at Camp Jupiter for over two years and was beginning to develop a very fierce reputation for nobility and loyalty, as if his only true friend was the Twelfth Legion as a whole. He served alongside Jason Grace during a quest in which he witnessed Jason slaying the Trojan Sea Monster. Jason's defeat of the beast overshadowed Alex's accomplishment of actually completing the quest. He congratulated Jason on his battle with the Sea Monster, but Octavian tried to corrupt him against the son of Jupiter by searching for jealousy and envy in the boy's mind. Octavian may have been older than Alex, but the latter knew that he felt shame for being saved by someone younger than him so long ago. Alex was able to use this against Octavian, who never tried to exploit him again.

The very end of the friendship between Octavian and Alexander came when Alex almost singlehandedly defeated Medusa, a Greek monster who was terrorising Camp Jupiter. Octavian had been about to slay the monster himself, but he was so careful that he missed his chance and the combative Alex acted first. The legacy of Apollo felt humiliated by the fact that Alex had bested him in becoming the camp hero, and thus focused less on being so and decided to devote himself to its governance. In the meantime, Alex met and fell in love with Helen Drake, a daughter of Apollo who was a member of the same cohort as him. She intrigued him with her equally combative nature, and the fact that she could actually challenge him as a person. The problem was that Octavian had a crush on Helen, and she seemed further inclined to choose him. However, as Alexander