SPOILERS ARE AHEAD IF YOU CARRY ON READING! YOU HAVE BEEN WARNED! -Cutefairy78
Jackson comes off as a nice guy, but really deep down he is bitter and cold. He tricks people into liking him, and then he kidnaps them and brings them to Gaea. He stays at Camp Half-Blood and sends the kidnaped victims through a tunnle that leads to Greece. Jackson mostly kidnaps anyone who is his friend. So the people that are in danger would be his closet allies.
Jackson is Elizabeth's twin brother, he was born in Boras Sweden but his mother put him up for adoption. He was adopted by a family in NYC and they took very good care of him. But when he was five he was playing out in the back yard when Gaea appeared to him in full human form. She told him he was destened for great things to come and that he had to leave with her. He left with her and she took him to the Lutos Hotel, every year on his birthday she visited him and gave him tasks to complete, she would help him train every day on the roof of the hotel in the green area through the dirt. He became the best swords master ever. When he was 12 Ares and Aphrodite came to the Lutos Hotel and were watching a show that Jackson was in. Jackson showed great swordsman ship and beat all of his oppenets, he challanged anyone who would dare to fight him and Ares agreed to. When Ares walked up on stage Jackson struck him right away and knocked him off the stage within two minutes. Ares was so upset that he burnt a scar across Jackson's chest to remind him who was the Best. After a few more years Gaea took him out and put him in Camp, having him kidnap people and sending them off to her to be used and trained as her slaves and army.
Jackson is VERY claustrophobic and can't be locked in a small room for more than 30 minutes without going crazy.