Me and my friend worked on a little bio for each of the characters, so you can have a little bit of an understanding.

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1. Jacen Skywalker
Personality: Jacen is a kind, gentle, and patient person to be around. He is also quite and adventurer as he explores the galaxy to learn more about the the Force, the Jedi, the Sith, and many events that happened in the galaxy.
Skills & Abilities: The Force, Master Duelist, Agility, Pilot, Sharpshooter, Multilingual, Mandalorian Combat Training (In the Future)
Affiliations: New Jedi Order, New Republic, Adelphi Squadron, Mandalore (In the Future)

BD-20 (Jacen's droid and companion)

2. Jaina Skywalker
Personality: She exhibits an aptitude for mechanics and piloting, even sharing some of her Uncle Han's impulsive and stubborn characteristics. She loves to fly across the galaxy and helps her brother and father on their adventures to learn more of the galaxy's past.
Skills & Abilities: The Force, Pilot, Sharpshooter, Master Duelist, Engineer, Tactician, Multilingual
Affiliations: New Jedi Order, New Republic, Rogue Squadron

3. Ben Solo
Personality: He possessed an inquisitive mind, learning about the Force and history of the Jedi, like his cousin, Jacen. His personality mirrored his parents' like his father's sarcastic sense of humor, which sometimes emerged in serious or violent situations, and he was mostly like his mother.
Skills & Abilities: Knowledge and Mastery of the light and dark sides of the Force, Telepathy, Clairvoyance, Healing, Lightsaber proficiency, Expert martial artist, Pilot, Mechanic
Affiliations: New Jedi Order, First Order

4. Anakin Solo
Personality: Like his namesake, Anakin was prodigiously talented in the Force, a gifted pilot, and a skilled mechanic. He was regarded as a genius in his childhood by his older brother and twin cousins.
Skills & Abilities: The Force, Pilot, Mechanic, Capable Duelist, Sharpshooter
Affiliations: New Jedi Order, New Republic

5. Kira Solano
Personality: Patient, Good listener, Optimistic
Skills & Abilities: The Force, Battle Meditation, Focus Rage, Master of Form 1 Lightsabers, & Multilingualism
Affiliations: New Jedi Order, New Republic

6. Finn
Personality: Righteous, Caring, Empathetic, Protective of Others, and a Fundamentally good person
Skills & Abilities: Expert Marksman, Skilled Combatant, Medical Knowledge, Force Sensitive
Affiliation: First Order (Former Stormtrooper), New Republic, New Jedi Order

7. Poe Dameron
Personality: Confident, Headstrong, Impulsive & Stubborn, a Good person who cares deeply about his friends, brave
Skills & Abilities: Skilled Pilot & Skilled Hand To Hand Combatant
Affiliation: New Republic

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That's it for these characters! Now there is one more that I think I mentioned that will be part of this story, but we'll introduce him later and he'll have his own bio chapter soon!