A group of thieves

You're a notorious criminal and thief. You're of average height and slender. But you're only 13 years old. A child. You were thrown into prison, but someone pulled you out and invited you to join his group. You agreed.

so you walked into the headquarters and saw four people:
A girl who looked about 10 years old, wearing a dark pink dress and black hair. She had red eyes and a piercing gaze. You silently noted that the girl was more of a boy and a vampire. This was Lilia—he's a man, but he dresses like a little girl. A skilled assassin.
The second girl was wearing a beautiful, elegant black dress and had large breasts. She had blonde hair and red eyes. She was also a vampire. And on her head was a black hat. This was Margo – she was a trans woman, a vampire, and a skilled killer
The third was a guy with white hair and also red eyes. He was dressed in loose black clothes and sharpening a knife. His gaze was stern and cruel. This was Gray—he was a vampire and a thief.
The fourth was a handsome man with long red hair and red eyes. He smiled coquettishly, but it was noticeably forced. This was Luka, a vampire and heartthrob, a skilled killer.

the man who freed you said: - You can settle in and make new acquaintances. You're in charge here.