INMT

Az is the very first letter of the alphabet, and he's all orange. He has straight, long orange hair (his hair reaches almost to his butt), orange eyes, slightly tanned skin, and a mole under his left eye. He has an average build. He wears an orange long-sleeved jacket, a white shirt with a white collar, and a black tie. He has orange pants and black men's shoes. He also wears black prescription glasses.
And briefly: sometimes they call him "Robin" (he doesn't like it), because he himself is kind of crimson. He has shoulder-length crimson hair with bangs, cut untidily. He has crimson eyes and slightly pinkish skin. He wears a black Biret, a dark crimson long-sleeved jacket, a white shirt with a white collar and a dark crimson tie, and white gloves. He also wears dark crimson trousers and black men's shoes. He also has a small crimson mustache. He has an average build. He is the best letter of the Russian alphabet.
Yaori is basically black. He has long, curly black hair with curly bangs. He has black eyes and dark skin, and an average build. He wears a dark gray hoodie, black baggy pants, and black and white sneakers. He wears several black and gray rings on his fingers. The last letter of the alphabet.
Yoshka is all purple. She has purple hair, pulled back into two buns with slightly long bangs. She has slightly pale skin and purple eyes with pupils shaped like white stars. She wears a long purple dress with short sleeves and a yellow bracelet on her left wrist. She wears purple shoes with a small heel. She has a hair clip shaped like a yellow star.

Az is a domineering, toxic character who enjoys bullying others, especially Yaori, often resorting to insults. Yaori is a melancholic, friendly, and trusting character. He prefers a calm environment and passively tolerates Az's bullying, trying to ignore it as long as possible. Due to constant insults, he dislikes and fears Az, but maintains a good relationship with Yoshka. And Short is an eccentric and strange character with pretentious facial expressions and gestures, and often stares into space. He is quite self-confident due to the fact that he is the best letter of the Russian alphabet.
Yoshka is friendly, kind, sympathetic, easily embarrassed, and always ready to help with anything. She's friends with I the Brief (they don't have any love interests, by the way).