Remus Lupin, Peter Pettigrew, Sirius Black, and James Potter
Sandra Weasley is the daughter of Molly and Aurther Weasley. She has six older brothers: Bill, Charlie, Percy, Fred, George, and her twin, Ron; and one younger sister: Ginny. Her animagous is a fox.
Remus is an only child and is a werewolf. Peter is an only child and his animagous is a rat. Sirius has a younger twin sister, Vanessa, and a younger brother, Regulas. His animagous is a puppy. James is an only child and his animagous is a stag.
Narissa Malfoy is the daughter of Lucius and Narcissa Malfoy. She has an older twin, Draco. Her animagous is a white-tailed doe.