So I'm going to do this in 2 parts as I've only completed up to the first 14 on editting the designs I'll add a little information on the characters like a profile.

1. Akita Akumi

Birthday: December 31st
Gender: Female
Height: 157 cm (5'2'')
School: Phoenix Academy
Class: 3-R
Seat Number: 1
Occupation: Student

Family:
Mother (Deceased)
Arihito Akumi (Father)

Akita's father is a famous assassin many people want to get their hands on, therefore putting a target on Akita's head, however she only shrugs it off and keeps a distance from people and finding information on them before getting close ot them.

Before R-Class Akita was part of A-Class - She was the top student - however fighting caused her to be dropped down to R-Class.

2. Yuzuru Sayami

Birthday: March 13th
Gender: Female
Height: 152 cm (5 foot)
School: Phoenix Academy
Class: 3-R
Seat Number: 2
Occupation: Student

Family:
Yuzuki Sayami (Mother, deceased)
Aine Sayami (Farger, deceased)
Reiji Sayami (Uncle)
Hanabi Sayami (Aunt)
Michiko Sayami (Cousin)

Yuzuru parents were both killed in a car crash, but what many people don't know is that the car crash was planned. It wasn't an accident, instead it was an assassination because Yuzuru's parents were skilled assassins.

Before Class-R Yuzuru was in Class-E in the second year and before that she was in Class-B. She was moved down to Class E due to her misbehaviour and then class-R for ruining the third year's dance with her friends who were in the third year.

3. Saika Sumi

Birthday: September 20th
Gender: Female
Height: 167 cm (5'6'')
School: Phoenix Academy
Class: 3-R
Seat Number: 3
Occupation: Student

Family:
Natsuki Sumi (Father)
Amami Sumi (Mother)
Amy Sumi (Younger Sister)
Kana Sumi (Younger Sister)
Hatake Sumi (Younger Brother)
Aunt (Deceased)
Uncle (Deceased)
Mayako Ume (Cousin)

Saika is the oldest daughter of the Sumi family, one of the oldest families known in the area however when someone asks about it Saika usually says it's a coincidence, not wanting a lot of attention. Her father is the head of her family until Saika turns 16. She then takes over. Her father is also a coach of a baseball team.

Saika was once in C-Class, however she got moved to R-Class when she couldn't keep up with the classwork due to her family pressuring her.

4. Amaya Eiko

Birthday: August 12th
Gender: Female
Height: 165 cm (5'5")
School: Phoenix Academy
Class: 3-R
Seat Number: 4
Occupation: Student

Family:
Yuuki Eiko (Father)
Sakura Eiko (Mother)
Ryu Eiko (Younger Brother)

When born Amaya was resented due to not being born a boy. Her parents were disappointed because they wanted a strong male to takeover her father's business for when he retires. Amaya was always told to be quiet and never talk when not needed which is the main reason why she doesn't talk much. As she got older her father began to accept the fact she was born a girl - especially after her brother was born - so he became kinder as Amaya go older, however her mother is still stict with her.

Amaya was once in the top class, however she ended up causing some trouble due to her mother irritating her therefore as a punishment and "grounding" by her mother who is the head mistress of her school she was sent down to R-Class.

5. Akashi Asahina

Birthday: April 11th
Gender: Male
Height: 175cm (5'9'')
School: Phoenix Academy
Class: 3-R
Seat Number: 5
Occupation: Student

Family:
Daiki Asahina (Father)
Etsuko Asahina (Mother)
Unnamed Uncle

Being an only child Akashi never had many people his age to interact with, therefore he sees everyone in Class-R as his siblings who  he wants to protect. He's from a wealthy family; his parents own a business that research different kind of things and create medicines. His parents are very strict on Akashi and expect him to marry the daughter of a rich company when he's old enought.

Before entering Phoenix Academy Akashi passed all his exams with top marks however he stopped trying around the second year which got him sent down to R-Class. His parents tried to pay for him to be put back into his old class however the head mistress stated being put in R-Class is a punishment for not achieving what is expected of the students; makingit impossible for him to get back up unless Akashi retains his previous good grades.

6. Hiedo Kaisho ( I know it's terrible)

Birthday: August 2nd
Gender: Male
Height: 185cm (6'1'')
School: Phoenix Academy
Class: 3-R
Seat Number: 6
Occupation: Student

Family:
Mother (Deceased)
Mr Kaisho (Father)

Hiedo was brought up to be a gentlemen, however not many people get a chance to see his kindness due to fearing his eyes that seem to 'glow' in intimidation; they glow a bright green much like a cat. Though the male is very gentlemenly, he also has a short fuse. If someone hurts someone he cares about he will either hurt them to the point they feel close to death or he will intimidate them with his eyes if he doesn't want his loved one to witness his violence.

Hiedo was once in Class B however was sent down to Class R due to people fearing his eyes and making up lies such as cheating on tests or violently attacking them (Which sometimes was true). When he got to R-Class Akita Akumi complemented his eyes; which was the first time someone other than a family member has complemented his eyes.

7. Ai Eita (His head looks weird doesn't it? ;-;)

Birthday: Feburary 14th
Gender: Male
Height:152 cm (5 foot)
School: Phoenix Academy
Class: 3-R
Seat Number: 7
Occupation: Student

Family:
Mrs Eita (Mother)
Mr Eita (Father)
Aito Eita (Older sister)

Ai is a very serious male who's not used to working in large groups. Usually when in groups he convinces his teachers to allow him to work alone. Ai doesn't get along well with his parents as they constantly force him to study or do work. The only person he's ever gotten along with in his family is his older sister Aito. He's extremely protective of his sister and will do anything for her.

Ai was sent down to R-Class for breaking an A-Class student's nose for attempting to bully Maemi when she was sent down to R-Class. No one expects Ai to be a strong apponment due to his height, however he could possibly take on Korosensei's tentacles at full force if needed.

8. Aina Enju

Birthday: 11th May
Gender: Female
Height: 168 cm (5'6'')
School: Phoenix Academy
Class: 3-R
Seat Number: 8
Occupation: Student, Waitress

Family:
Father (Deceased)
Ariana Enju (Mother)
Rin Enju (Younger sister)
Haruko Enju (Younger sister)
Kira Enju (Younger sister)
Subaru Enju (Younger brother)

Aina is a full time student and part time waitress. She works to earn money for her family as they don't have enough to get everything needed to live since her father died. They have enough for food and bills however not enough for repairs around the house. Her mother is also very ill and works at two jobs so Aina takes responsibility of being the mother when not at work or school.

Aina was sent from D-Class to R-Class due to slacking off in class, falling asleep and having many days off due to her previous jobs and her own health problems.

9. Katsu Natsuki (Idfk what happened here ;-;)

Birthday: September 10th
Gender: Male
Height: 173cm (5'8")
School: Phoenix Academy
Class: 3-R
Seat Number: 9
Occupation: Student, boxing champion

Family:
Mr Natsuki (Father)
Mrs Natsuki (Mother, deceased)

Katsu is a silent boy who is very distant when it comes the females. The only female he seems close with is Aina. He's very distant because his mother died when he was younger and his father told him that women break easily. Katsu is a boxing champion; making him automatically strong and skilled in combat.

Katsu was sent down to R-Class for fighting against a group of boys who tried to put the moves on Aina who he treats like his sister. Once he was sent down to R-Class Katsu set his sight on Ayato due to his strength. He's often seen with Ayato at least a couple times a month training.

10. Ayato Daichiro (I'm not sure if I like it or hate it)

Birthday: October 31st
Gender: Male
Height: 180cm (5'11")
School: Phoenix Academy
Class: 3-R
Seat Number: 10
Occupation: Student

Family:
Father (Deceased)
Mother (MIssing)
Akito Daichiro (Younger Twin Brother)
Ame Daichiro (Younger Sister)
Aguri Daichiro (Younger Brother)
Unnamed Uncle

Ayato's father died  when he was seven and his mother disappeared when he was eleven. Being the oldest twin and oldest child all together Ayato took on the responsibility of looking after his siblings. His uncle visits every two weeks with money for food and supplies.

Ayato went down to R-Class for protecting his brother from a group of jocks. They were trying to attack Akito due to Akito spying on their girlfriends while they were changing in the locker rooms. Ayato went down to R-Class with his brother and in training everyone found out he was the strongest male in the class.

11. Akito Daichiro (I know it's terrible... Just no...)

Birthday: October 31st
Gender: Male
Height:  180cm (5'11")
School: Phoenix Academy
Class: 3-R
Seat Number: 11
Occupation: Student

Family:
Father (Deceased)
Mother (Missing)
Ayato Daichiro (Older Twin Brother)
Ame Daichiro (Younger Sister)
Aguri Daichiro (Younger Brother)
Unnamed Uncle

Akito's father died when he was seven and his mother disappeared when he was eleven. After the disappearance of his mother Akito began to get distant. He became friends with the wrong people and soon began to disrespect women, spying on them changing, taking photographs, and dating three different girls at a time.

Akito got sent down to R-Class due to being caught in the act. He was sent down with his brother due to his brother protecting him in a fight against a group of guys in the higher classes. Once reaching R-Class his so called friends left him and Akito began to become nicer as he began to admire his twin brother.

12. Ichirin Katsune (I feel proud of this one *^*)

Birthday: September 1st
Gender: Female
Height: 173cm (5'7'')
School: Phoenix Academy
Class: 3-R
Seat Number: 12
Occupation: Student

Family:
Mother (deceased)
Father (deceased)
Ichiko Katsune (Younger sister)
Erina Gina (Aunt)
Yu Hanako (Uncle)
Luna Hanako (Aunt)
Aria Hanako (Cousin)

Ichirin lost her parents through a bank robbery. They were shot to death, as were her aunt and uncle so now with no parents she and her younger sister live with their aunt, Erina. A few years later Ichirin discovered her parents death was an assassination due to them being well known assassins. Ichirin is even an assassin, she's been training since she was younger however she developed a fear of guns due to her parents deaths.

Ichirin's reason for being in R-Class is unknown to everyone. She just appeared there one day, a week before Erina and Tristan started to teach there. A lot of the students suspect she was sent down requested by her aunt due to her assassin skills could possibly help kill Korosensei.

13. Oki Ruka (HUGE SPOILER IN HER PROFILE!)

Birthday: April 3rd
Gender: Female
Height: 157 cm (5'2")
School: Phoenix Academy
Class: 3-R
Seat Number: 13
Occupation: Student

Family:
Mr Ruka (Father)
Mrs Ruka (Mother)
Oki Ruka (Older Sister, Deceased)
Otomi Ruka (Older brother)
Eiri Ruka (Older brother)
Airi Ruka (Younger sister)
Tetsuya Ruka (Younger brother)

(SPOILER)Oki Ruka is actually her sister's name. This girl's real name is Emi Ruka. Her older sister was killed a few years ago by Korosensei, when he was still human. She is on a mission to kill Korosensei for another person and gets paid to stay in R-Class and learn about Korosensei.

As soon as Emi started at Phoenix Academy she went straight to R-Class. Many question it but just put it down to believing she cared more about sports than studying due to her speed and altheltic body.

14. Haru Tenshi

Birthday: April 9th
Gender: Male
Height: 164 cm (5'4'')
School: Phoenix Academy
Class: 3-R
Seat Number: 14
Occupation: Student

Family:
Hiei Tenshi (Father)
Kira Tenshi (Mother)
Kaoru (Older sister)
Aria Tenshi (Younger sister)
Akiko Tenshi (Younger sister)
Arata Tenshi (Younger brother)
Aunt (Deceased)
Uncle (Deceased)
Melody Misaki (Cousin)
Ryu Misaki (Cousin)

Haru's full name is Haruka Tenshi; he goes by Haru because of Haruka being a girl's name.  Haru is a sweet boy who a lot of girls fall for. Many people mistake him for his father as he looks like his father when his father was younger. Haru can often be seen with a big bag on the weekend or half term when he's not with his friends; he delivers food to homeless people and families who can't afford much. This all started with his grandfather. His grandfather and grandmother did it, his father and mother does it, as does he and his siblings. He is cousins with Melody, aka Mel and due to the two being close people jump to conclusions and believes they're dating. 

The reason for Haru being in R-Class is due to tardiness. He is often late to class due to helping the elderly cross the road, giving food to stray animals, helping children if they've fallen over, etc...

I know a lot of them are extremely pale ;-; It's what happens when I use certain effects and I'm too lazy to change it

Hope this was ok. I'll do the next one soon (Will be updating chapters before hand though)