Pettigrew defected from the Order of the Phoenix and betrayed his closest friends to Lord Voldemort when his life was threatened, showing selfishness and disloyalty at the core of his being. Even Voldemort viewed him with disdain; the only reason why he kept him alive was because he occasionally proved to be useful..
Consequently, why did Peter Pettigrew betray Harry's parents?
He starts out by passing information, but then Sirius gives him the means to solidify his position once and for all: he suggests that James use Pettigrew as the Potters' Secret Keeper. Pettigrew betrays Lily and James because he thinks Voldemort is winning the wizarding war.
Furthermore, why did Peter Pettigrew get sorted into Gryffindor? Peter admired Gryffindor because it was the powerful House. If everyone who admired Power were sorted into Gryffindor, Slytherin would be empty. Peter is generally a coward because he fears those in power, but he is brave in a sense that he is willing to do dangerous things for those he favors.
Additionally, why did Sirius Black betray the Potters?
When Pettigrew betrayed the Potters to Voldemort, Sirius sought to exact revenge on Pettigrew. However, Pettigrew was able to frame Sirius for his betrayal of the Potters, the murder of twelve Muggles, and the staged murder of Pettigrew before Sirius could accomplish this.
Why did Lily Potter choose James?
Lily chose James because James proved so unyielding in his loyalty and selflessness to anyone important to him. Snape could never do that while she lived. Only after her death did he finally learn how.
Related Question Answers
Who killed Peter Pettigrew?
The silver hand turns against him and strangles him to death as punishment for his moment of pity. They haven't showed it in the movie, but his hesitation to strangling Harry makes his silver hand (the one Voldemort gave him) turn on Peter. So basically Peter dies by his own hand.Who betrayed the Potters?
Peter
What is Sirius Black's Patronus?
It is known that Sirius was an unregistered animagus. He would turn into a black dog. His patronus was also a dog(black dog). Tonks' patronus changes into a wolf, after she falls in love with Lupin.Did Dumbledore know Sirius was innocent?
YES! Dumbledore might not have had conclusive evidence to present to the court of Sirius's innocence, but he bloody well should have known that Sirius would never betray James and Lily! Dumbledore knew that Sirius would never espouse the values of Voldemort and he would never be tempted by them.How did Colin Creevey die?
Crabbe's death has been ruled as an accident caused by the explosive power of a Fiendfyre spell he cast. Colin Creevey, 17, died May 2, during the Battle of Hogwarts at the conclusion of the second war against He-Who-Must-Not-Be-Named.Why does Arthur Weasley warn Harry about Sirius?
1993 Arthur Weasley warns Harry about Sirius's Black trying to kill him. (At the time he does not know that Sirius Black is innocent.) Sirius was a member of the original Order, but there is no canonical information to support that Arthur was ever a member of the original Order.Who killed Remus Lupin?
Antonin Dolohov
What is the secret keeper in Harry Potter?
Secret Keeper. The Secret Keeper is the witch or wizard designated to hide a secret by means of the Fidelius Charm; the secret is embedded in their very soul.Why didn't the Dementors affect Sirius?
Since Dementors can not properly sense the less complex thoughts and emotions of a person when he takes on an Animagus form, doing so allowed Sirius Black, to temporarily avoid feeling the effects of the Dementors' presence.Did Sirius Black have a child?
Sadly, according to the Black Family tapestry, Sirius did not survive into adulthood. Phineas later named his own son 'Sirius', presumably in honour of his late brother.Why was Sirius Black looking for Harry?
Sirius never wanted to kill Harry, he wanted to kill Peter Pettigrew, everyone only thought that Sirius wanted to kill harry because they all thought he was the one who betrayed the Potters, and they also thought he killed Pettigrew.Did Sirius Black die?
He was killed in a battle at the Ministry of Magic by his cousin, a Death Eater, Bellatrix Lestrange in Harry's 5th year at Hogwarts. He returned during Harry's 7th year along with James, Lilly and Remus, after being resurrected with the help of the Resurrection stone.Why did Tom Riddle kill Harry Potter parents?
In this story, Rowling introduces him as the Dark Lord who murdered Harry's parents, James and Lily, but as a result of his mother's love and willingness to sacrifice herself for him, baby Harry survives when Voldemort tries to murder him with a Killing Curse.Why did Sirius Black kill Harry?
He wanted to avenge the death of 'You-Know-Who' - evil Lord Voldemort - whom Harry had killed to avenge the death of his parents (see earlier Harry Potter books).What is Sirius Black wand made out of?
This high quality, hand-painted wand is a recreation of Sirius Black's wand from the films and comes in an Ollivanders box. Made of resin, this wand measures approximately 15 inches long. The wands of the Wizarding World are unique to every owner and consist of a combination of special wood and core material.How is Draco related to Sirius?
The Malfoys are related to the Black family through Narcissa (a first cousin of Sirius Black, Harry's godfather), which makes Draco a nephew of both Bellatrix Lestrange and Andromeda Tonks. Draco is also Nymphadora Tonks' first cousin through their mothers.What is the shrieking shack in Harry Potter?
The Shrieking Shack is a rickety, juddering structure set on a hill near Hogsmeade village. During the events of Harry Potter and the Prisoner of Azkaban, it is discovered that the building was created to house Remus Lupin during his transformations into a werewolf during his time as a Hogwarts student.Is Peter Pettigrew a Death Eater?
Peter Pettigrew, nicknamed Wormtail, is the only Death Eater known to have been in a House other than Slytherin (Gryffindor) while at Hogwarts. There, he was a close friend of Sirius Black, James Potter, and Remus Lupin, although he was the least intelligent and least talented of the group.Was Harry Potter a Hatstall?
Their silent wrangling resulted in triumph for the Hat. The only true Hatstalls known personally to Harry Potter were Minerva McGonagall and Peter Pettigrew. 
