Ron Weasley - he's oblivious, he's stubborn and he will eat all your sandwiches. He's currently working on healing, but is set on speeding up the process in his own way. Drinks in excess, eats in excess, has an unofficial girlfriend in Victoria Frobisher.
Dean Thomas - Holed up with Demelza Robins and cans of squeeze cheese in her family's home. Is super friendly and all around nice guy. Best mates with Seamus Finnigan and is about to relocate to the safe-house in order to complete the 98 Gryffindor boys dormitory (he doesn't know if Melza is coming with or not). Is likely a cock-block to Susan and Seamus anytime the three of them are together. Will go into battle without a wand, savage when it comes to fighting for what is right.
Hannah Abbott - A complete basket-case living on calming draught most days just to function properly. Is in a weird love triangle with Neville Longbottom and Ernie Macmillan (at the moment, but not for much longer). Is currently not the favorite Puff in their inner circle. Has a flat with her best mate, Megan Jones.
Susan Bones - Hufflepuff wild child, is known for being a serial dater. Brews her own booze (is not liable for anything abnormal happening after consumption), is a bit of a party girl in her own right. Giving her male family members gray hair and heart conditions since birth. Has been on the run with Seamus Finnigan since after the Battle of Hogwarts, has developed feelings for him but denies, denies, denies including to herself.
Zacharias Smith - The unfriendliest Puff that you will ever meet. Obnoxious, and more times than not, a complete asshole. He's offensive, and isn't the most popular sort of guy. Professional Quidditch player for the Falcons, seems to get his ass handed to him by females quite frequently (he won't fight a girl). Anti-Weasley. Part of the DA/Order because Megan and Ernie, otherwise he'd just be ignoring the politics all together. Will save himself and trample all the ones in his way. Self absorbed. Has big brother issues. Lives in a flat with his best mate Ernie. In a relationship with Megan Jones.
Altair Dolohov - Extreme daddy issues. Dating Morag. Hufflepuff student. Hobbies include creating spells and being the black sheep of his family. Friendly to those who are friendly to him. Rebellious and broody. Most likely to never be at home. Thinks Seamus and Susan should just shag and get it over with already. Has a brotherly sort of bond with Harry Potter.
Adabella Travers - Ravenclaw, little sister of two older brothers, lives with her brother Niklaus who is her caregiver when not at Hogwarts, known for being sickly. Is heavily into divination and scrying. Her pet is a gigantic tortoise named Lightning. Is skilled in legilimency and occlumency. Is completely neutral at the moment and could be swayed in either direction.
Gregory Goyle - Friendly to the right sort, marked Death Eater, bold, mouthy, violent and hot tempered, will murder people for practically nothing, has no remorse for anything he does to others, his best mate is Draco Malfoy. Has a thing for his deceased best mates girlfriend, Millicent Bulstrode but he's trying not to be weird about it or make it obvious.
Astoria Greengrass - Slytherin student, from a Death Eater family, has a crush on a marked Death Eater (Draco Malfoy), believes in the cause of the other side and on the down low does her part to help out Ginny Weasley and company. Dreamer, naive, is often in trouble for wandering the corridors after curfew. Has become the new Slytherin IT girl due to her ties to Draco. Does not want to be popular, does not want any eyes on her besides Draco's. Has a malediction and remains hopeful for a cure but feels like it will never come in time for her. Obsessed with gardens, closest friends include Flora Carrow and Neville Longbottom. Is trying hard to find her place in the world on her own terms.
Hestia Carrow - Former Slytherin IT girl for her year and ideal pureblood trophy wife. Dropped out of Hogwarts before the start of her 7th year in order to marry Darius Gibbon who is quite a bit older than her (arranged marriage). Twin sister to Flora Carrow, daughter of Alecto Carrow and a currently unknown DE. Is quite frankly a bitch to anybody other than her friends. Throws horrible tantrums when she doesn't get her way. Always expects to get her way.
Lucius Malfoy - Marked Death Eater, husband to Narcissa, father to Draco. New Potions Master at Hogwarts. Doing everything that he can in order to regain the favor of the dark lord while secretly doubting his abilities as a father and wonders if he has done right by his son, by pushing his son into the Death Eater way of life. Best friends with Rabastan Lestrange, his brother in law's brother.
Draven Gibbon - Savage af. Marked Death Eater. Uses his butcheries as a cover up for what he really enjoys doing (killing). Is set in his ways and very arrogant. Twin brother to Darius Gibbon. Treats everything in life as a business dealing. Is very skilled with his hands.
Gwen Strout - Married to Miriam Strout. Manager for the Arrows. Retired pro Quidditch player. Supports the Order and is ready to fight if needed, but is also hesitant due her family. Shared multiple children (adopted) with her wife. Is rough around the edges but has a big heart.
I don't think I'm forgetting anybody but whew, that took a while.