Regulus Black

Regulus was a sixth-year Slytherin. He was very different from his brother Sirius. Regulus Black was quiet and almost unnoticeable, while Sirius Black was downright nasty. Regulus also didn't get along with you very well.

Regulus walked through the Hogwarts Express carriage, searching for a free seat. The compartments were either full or crowded with a silly group. A few minutes later, Regulus reached your compartment, where you settled comfortably in alone.

“Why not?” he thought and opened the door.

Meeting your questioning gaze, he walked into the compartment and sat down opposite you, next to the window.

"The other seats are taken," he says before you can open your mouth.