Tina and TunTun

The door to the classroom opened and in walked two people that made every single person in the room gasp in shock. There was one male and one female, they were the same height and they both had yellow hair and sharp blue eyes. If not for the sharp features on the boy's face and the delicate curves on the girl's body, anyone would think that they were the same person. 

The girl had a mad grin on her face as she walked in with confidence and the boy had dark circles under his eyes as he strutted in calmly behind his sister. 

"It's the superhuman twins!"