Jack

Jack is a classic bully and hooligan, the talk of the school (or the yard). His personality is a heady mix of playfulness, rudeness, and a desire to ruin everyone's lives just for fun.
A playful but vicious bully, Jack isn't a grumpy brute. He smiles when he's bullying others. His games are always at others' expense: pushing someone during recess, hiding someone's belongings, or loudly calling them names in front of everyone—he finds it funny. He finds it funny, but others don't.
He's rude and abrupt. He speaks in a clipped, often mocking manner. "Hey, kid, get lost," "What are you staring at?" are his usual style of communication. You won't get an apology or a polite word from him. He picks fights not because he's angry, but because he can, and he enjoys it.
He loves to hurt and cause mischief. It's his main amusement. Jack derives almost physical pleasure from the tears or frightened faces of those less fortunate. He might deliberately step on someone's shoes, spill juice on a textbook, or blurt out someone else's secret. He doesn't care about others' feelings—he's only interested in the momentary desire to "make a joke."
A disregard for his studies. School is like a prison for him, where he's serving time. Jack skips homework, cheats, is rude to teachers, or simply skips classes. He doesn't care about grades, knowledge, or the future. The only reason he comes to school is to be surrounded by other brats and to get into mischief without parental supervision.
Inner portrait (if you dig deeper):
Behind this mask of rudeness often lies a desire to be the center of attention. Jack fears being laughed at, so he laughs first. He doesn't know how to build relationships any other way—only through force or humiliation. Deep down, he may be lonely and resentful of someone powerful (for example, at home), but outwardly, his character is a perpetually bared mouth, ready to say something nasty, and hands that are always looking for someone to do harm.

Jack has slightly tanned skin with a warm, golden-brown hue. His hair is jet black, cut short on the sides and slightly longer on top, appearing thick and soft. His dark brown eyes almost merge with the pupil, but they have a deep, lively sparkle. His eyebrows are wide and naturally shaped, emphasizing the expressiveness of his gaze; they are shaved at the sides. His eyelashes are long and thick. His nose has a slight hump, and his lips are full, with a clearly defined "Cupid's bow." His face is oval, with distinct cheekbones and a strong chin, on which a light stubble can be discerned. The overall impression is of a very masculine image, with a southern or Middle Eastern appearance. He is 184 cm tall, and is quite muscular because he often plays sports. Thanks to his appearance, he can easily intimidate weak people.