Mikealson or Black?

Arrival at Hogwarts

 The screen turns on again as we see Regulus looking at Sirius across the whole of the Gryffindor as the rest of the hall is feasting .he seems to be looking quite angry for a 12-year-old. 

"He seems to have inherited the Mikealson temper." Says Finn as he sighs, wondering just how much more drama is there to come into his family.

"Glaring at your brother again?" Narcissa says, nudging him.

"Of course he was glaring at me. When does he not? " Sirius says,feeling a bit sad.

Regulus shakes his head. Then he goes back to eating. He turns to Narcissa as he asks,"Where were you earlier on the ride?"

"With Bones, why?"

"Nothing, just curious."

"I know you want to make Sirius suffer for being mean with you, but -"

"Don't get caught and get away. Do not leave evidence. No evidence, no punishments."

"Oh my my. He is definitely a mischief creator." Kol says smiling and looking proud.

"I thought him that. As long as you don't get caught you are free to walk away." Bellatrix says visibly proud with a smile on her face.

"Wha-No, I was not going to encourage you."

"You weren't? Oh! That's Bella's job. What were you saying?"

"That you should ignore him."

"But there is no fun in that," Regulus says, making a face.

"Exactly." Says Rebekah  

All the while, they have been talking in French. Rabastan looks between them confused, but then he says,"Oh wait, you both are Black." and then goes back to eating.

"What's that supposed to mean, Lestrange?" Regulus asks with a raised eyebrow.

"Nothing."

Just then, the doors of the grand hall opened and entered a lady wearing all purple. Just one glance, and Regulus already looked disgusted.

"She is a criminal for what she is doing. That's a crime."Rebekah exclaims loudly.

"Indeed it is. That's a major crime. I will never look at the colour the same ever again." Narcissa says looking visibly disgusted.