Sandra was a lawyer and Emilio's father chose her to represent his new cola-brand "Olympian Cola", he had to choose from over one thousand of other lawyers and finally chose her, they fell in love and dated for about about two weeks. For their first date they went to an Italian restaurant, for the second, they had breakfast in Sandra's house and for the third one they went to a seafood restaurant. They conceived Emilio. A week after that, Emilio's father disappeared without a trail, leaving Sandra worried. Sandra then gave birth to Emilio.
The first thing he learned was talking. Sandra was amused when she heard Emilio's first word, "mom". He learned his second word an original way: When Sandra went to the bathroom, a guy who was selling bread came by, the woman who helped Sandra take care of the chores started to imitate him and said: "Bread! Bread! Bread!" And he did too, introducing the word bread to his vocabulary. When he was 8 months old he had over 50 words in his vocabulary. When he learned to walk, at 11 months, he had over 100 words in his vocabulary.
When he entered school, he discovered he was naturally skilled in both math and languages, mostly Spanish. He was a loner, but at age 4 he would meet the girl who was going to be his best friend for the next 9 years.
He lived like any other kid until age 13, when an harpy attacked him while he was running trough the woods, he saw an eye and he freaked out, but then his favorite teacher, who was a satyr appeared, they fought the harpy and he got injured, but his mother took him for the hospital on time. When he left the hospital and resumed school, he was selected for a "Summer Camp" that turned out to be Camp Half-Blood and his favorite teacher told him he was a demigod.
When he got to the camp, he befriended three of his half-siblings and almost immediately got used to his demigod life. He has been here for 3 days, and on his first day he met a daughter of Aphodite and developed a crush on her. When his satyr teacher told him to choose a weapon, he chose a sword because he thinks swords are cool.