I Solemnly Swear That I Am Up To No Good Quiz

Answer: Sirius Black

Sirius Black in reality is wrongly accused. He is Harry's Godfather, thought to have betrayed James and Lily Potter. In reality, (according to the book) he made Peter Pettigrew secret keeper last minute because he thought Voldemort would assume he (Black) was secret keeper to the Potter's, but Peter had been a spy for Voldemort and thus we have a book/movie series.

Answer: Fred and George

Fred and George stole it from Filch, the caretaker's office. Lupin confiscated it but returned it once he had resigned. As explained in the book, but not the movie the mapmakers Moony, Wormtail, Padfoot, and Prongs were four childhood friends at Hogwarts: respectively, Remus Lupin, Peter Pettigrew, Sirius Black, and James Potter. Lupin was a werewolf, and the other three became unregistered animagus'.

Answer: Werewolves

Lupin was a werewolf, and Snape thought he could reveal the secret to the students by making them aware of werewolf features and characteristics, but Hermione was the only one who figured it out.

Answer: Part horse, part eagle

Hippogriffs are half eagle, half horse. They don't like being insulted, and are very clever. I want one.

Answer: The Grim

The Grim is a big black dog. Coincidentally, Sirius is an animagus that turns into a big black dog. It wasn't an omen at all.

Answer: Ancient Runes

In the book she says Arithmancy, in the movie as the descend a flight of stairs, headed to Hagrid's I believe, she says Ancient Runes; the magical alphabet used in Norse Mythology.

Answer: Cat

Crookshanks is Hermionie's cat. He recognizes that Scabbers is not a rat, well metaphorically he is, but Peter Pettigrew. In the book he helps Sirius try to catch him. In the movie, he just peeves Ron.

Answer: Zonko's

Secret passages from Hogwarts enter in the Shrieking Shack and in Honeydukes. Zonko's is mentioned though, it is the joke shop that Fred and George love.

Answer: Harry

Harry says this after Lupin has changed into a werewolf and had just been attacked by Buckbeak.

Answer: Sir Cadogon

Sir Cadogon was the knight that was running around in the paintings across from the Fat Lady. In the book, after the Fat Lady is attacked by Sirius Black, Sir Cadogon takes over the portrait hole and he changes the password constantly. Poor Neville writes them all down, and Crookshanks intercepts the list of passwords and takes them to Sirius enabling him to get into the dormitories where Ron wakes up and spots him before he can get to Scabbers/Peter. Peeves is the Hogwarts Poltergeist. Penelope is Percy Weasley's girlfriend. Cho was the Ravenclaw seeker that Harry has a crush on.