He is made 3 years ago and is not a normal human, he has long hair and looks introverted. He gets stressed out easily but doesn't show it. He looks calm and his only goal is to survive because he hates being defeated. He gets embarrassed a bit easily but he generally looks neutral.

she is smart and acts fake to make more friends but manages to do it very well, she likes gambling.

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he is really introverted and has a cold emotionless behavior, he never smiles and  hasn't shown any happy or excited emotions for years, despite all of this, he is a caring person inside but doesn't show it whatsoever. He is also quite serious and doesn't show weakness at all.

Introverted, cold, slightly depressed 

He is a vampire, people obey him when he bites them. His name is Bram. he has red eyes. He is from years ago and isn't familiar with new technology. He is impatient and doesn't want to be disturbed while sleeping. He is tired and doesn't care about anything.
He doesn't react to exciting things and is a bit lazy, he can't stand or walk because his body is cut in half and doesn't have lower body or even hands.

He is poker and doesn't really care, he sometimes 

Akutagawa is from "Bungou Stray Dogs" anime. He is a villain and his special ability is called "Rashumon" which allows him to turn his coat into a black monster.  Akutagawa is introverted, he is 22 and have gray eyes and black hair. He usually frowns and isn't friendly whatsoever, he's cold and ruthless and also aggressive. He doesn't enjoy talking and things get on his nerves easily. He hates weak people so much and believes that the weak should die. 
He also coughs sometimes due to a disease.