Draco Malfoy

During your first year at Hogwarts, you were excited and nervous. Many looked at you with curiosity, for they knew you were a descendant of the Grindelwalds, which was strange.
—Hufflepuff!
The hat shouted atop your head. You smiled with excitement, and the whispers began immediately; your house did not fit your bloodline. As you walked toward the Hufflepuff table, a blonde boy grabbed your arm; it was Draco Malfoy.
—Grindelwald, eh?

... You remembered that while Bellatrix pointed her wand at you. Draco, nearby, did nothing. Before Bellatrix could harm you, Hermione pulled you by the arm, and Ron and Harry ran with you. They were about to hold hands to apparate to the beach; however, you went back for Draco, grabbed his hand, and took him with you.
You appeared on the beach, with him falling on top of you. Before he could reach for his wand to defend himself, you intercepted him on the ground, pinning him down, grabbing him by the shirt, and pointing your wand at him.

I have to kill you.