The Riddle Twins

Characters

Ares Salazar Cygnus Riddle: He always thought that he was Harry James Potter, the son of James and Lily Potter. He overhears a conversation between Dumbledore, Ron and Hermione, and he finds out that he's adopted. So, he goes to Gringotts to take an inheritance test and finds out he is the son of Tom Riddle and Bellatrix Riddle and the twin brother of Athena Rowena Felicia Riddle. He finds out that the Ron, Ginny, Molly and Dumbledore have betrayed him and they were controlling him and using him for the fame and stealing from him.
Appearance: 5'8, Pale skin, jet-black hair, dark brown eyes with a hint of red.

Athena Rowena Felicia Riddle: She always thought that she was Hermione Granger, a muggleborn and a part of the Golden Trio. She too overhears the very same conversation Harry heard. She goes to Gringotts and finds out that she's the pureblood daughter of Tom Riddle and Bellatrix and the twin sister of Ares Salazar Cygnus Riddle. She too was betrayed by Ron, Ginny, Molly and Dumbledore. They had been dosing her with potions to make her believe she was light.
Appearance: 5'6, Pale skin, jet-black hair, blue eyes.

Tom Marvolo Riddle: The son of Tom Riddle Sr. and Merope Gaunt. He is the husband of Bellatrix Riddle and the father of Ares and Athena Riddle. Dumbledore Imperio'd him making him believe that his children were dead. He wants to take revenge on Dumbledore. What happens when he finds out they are alive and are actually Harry Potter and Hermione Granger.
Appearance: 6'3, Pale skin, jet black hair, reddish-brown eyes.

Bellatrix Druella Riddle: The daughter of Druella and Cygnus Black and sister of Narcissa Malfoy and Andromeda Tonks. Wife of Tom Riddle and the mother of Ares and Athena Riddle. Dumbledore Imperio'd her making her believe she was the wife of Rodolphus Lestrange.
Appearance: 5'9, Pale skin, black hair, dark eyes.

James Charlus Potter: The son of Charlus Potter and Dorea Black. He is the husband of Lily Potter and the Godfather of Athena and Ares Riddle. Killed on 31st October, 1981, while babysitting his godchildren.
Appearance: 6'0, fair skin, black hair, hazel eyes.

Lillian Marie Potter: The daughter of Harry and Marie Evans and the sister of Petunia Dursley. She is the wife of James Potter and the Godmother of Ares and Athena Riddled. Killed on 31st October, 1981, while babysitting her godchildren.
Appearance: 5'6, pale skin, red hair, green eyes.

So these characters are the main ones, or basically the parents/ ex-parents. Others are all the same and for the other characters you can refer to the other story. And the other characters such as the Malfoys, the teachers and the other students all look the same as in the movie. 
Note: Blaise is black. (not being a racist here)

I'll upload the fourth chapter later. Bye!

Boredlife07 Signing off.