I will tell you about everyone I know.
Percy Jackson is son of Posiden. He likes his sword riptide. He is close to all of his friends as well.
Annabeth Chase is doughter of Athena. She hates spiders, but loves buildings and Percy Jackson. She is also close to her friends.
Clarisse La Rue is doughter of Ares. She loves to break things. Her favorite weapon is anything she has in her hands. Not so close to her friends.
Leo Valdez son of Hesphaetus. He loves to make people laugh. He is also a huge flurt.
Jason Grace is son of Zeus. He is from Camp Jupiter. His sister is Thalia Grace.
Thalia Grace is doughter of Zeus. She gave her life to save the camp. She was recarnated by the golden fleece. She is now a hunter of Artemis.
I am son of Hesphaetus. I am close to all of these people. They are my best friends. I would give my life for all of them to live. (Expecially Clarisse)