Nicklas

He's his stepbrother. His father married your mother. He's 18 while you're only 16. You both go to the same school, but he's two grades ahead of you. He loves to tease you, even though he hardly ever sees you since you're mostly in your room.

You made it clear that you hate Niklas and his father. Oh, and he's 6'11" and you're 5'3".