I hope they're okay. :)
Name: Britannia Lucy Hunt
Age: 13( She just turned 13. The youngest.)
Appearance: Thick, glossy, soft black hair to her hips(bangs. Usually down to cover her face, but she sometimes pulls it back in a braid.) Her big eyes are usually pale icy blue but will turn sort of obsidian black with violet flecks when she uses her powers. She's slim and petite with a lithe build, under the average height and weight for her age, with very very very very light skin, pale pink lips, she usually doesn't smile, but it's extremely pretty when she does. Looks a year(or two) younger then she is(depending on what she’s wearing.) She’s extremely beautiful, but doesn't care.
Clothing: A black t-shirt, black hoodie, and black jeans no matter what the weather is(it is really really hard to get her to wear short sleeves.) An obsidian heart shaped pendant that she can turn into a stygian iron sword(it’s black with a obsidian heart shaped pommel. She tends to forget to turn it back into a necklace though and usually just ends up sticking the sword through a belt loop on her pants.)
Personality: Sarcastic , usually pretty quiet(almost silent sometimes), doesn't give a darn what people think about her(well, she likes being left alone.) Rebellious , a little harsh, cold, and removed sometimes. Extremely loyal, and cares about people, and despite acting like she doesn't care, when her friends are in danger she'll be one of the first people there to help. Can be rather... sadistic to the people who harm her friends. Very proud, doesn't like to accept help ever for any reason at all(and will always insist she is fine.) If fairly certain that her brother(s, if Nico’s in this)(and pretty much everyone else in the camp) hate her(lots of the other campers do/dislike/distrust her.)
Parent: Hades and Bryony Hunt (a daughter of Demeter.)
Skills: She says none. But she has a photographic memory. She's extremely skilled at many things, but people tend to underestimate her. An extremely talented thief/artist/fighter. Good at reading people. Can walk silently and sneak up on anyone(often without meaning to.)
Weaknesses: Too quiet sometimes. Too stubborn/independent. Keeps everything to herself/bottled up inside, doesn't usually say her plans out loud. She often doesn't eat or sleep unless forced to(even then she only eats/sleeps a little.) Her shadow travel drains her (like it does Nico. Only a little worse.)
Other: Her father gave her a hellhound pup names Jinx for her 13th birthday. Has all of Nico's powers (and some plants respond to her emotions.) Her mother was Scottish(she's dead now.) She has a very light Scottish accent.
Name: Arthur Paul Green
Appearance: Soft, thick, bright sunlight gold curls(a little longer then military length. And a little longer in the front.) Bright sky blue eyes with a honey brown star. He’s tall(5’10), with an athletic build, tan, and extremely handsome.
Clothing: A orange/dark yellow/light brown flannel shirt with rolled up sleeves. A white t-shirt. Jeans. Dark grey Converse.
Personality: Very very kind, brave, sweet, cares very deeply about people. Very selfless and will always try to help people. Is very serious about helping people when they are injured. Hates to see the people he loves in pain and would do anything(almost) to stop it. Has an amazing sense of humor and loves to make people laugh. Very outgoing. He cannot stand bullies, when people are unnecessarily rude, or say bad things about themselves. Witty, charming, charismatic, very dedicated, cares about duty, but he cares about people almost just as much. Extremely intelligent(despite not always acting like it.)
Parent: Apollo and Mercy Green
Skills: Archery, healing, medical stuff, music, athletic stuff. All the skills Apollo's kids have. He’s pretty stubborn(especially when arguing with Britannia about if you need sleep/food to survive. She says everyone but her does. He calls her a dummy and throws a box of cookies at her. You know. Normal stuff.)
Weaknesses: He cares “too much” about people. Too kind. Doesn’t like to hurt people. Too selfless.
Other: Has powers of healing/light/audiokinesis. He has a magic sword that’s a mixture of imperial gold/celestial bronze(it can become a knife, or a pen that writes in a bronze color.)