- At Aragog’s funeral, Horace Slughorn said to Harry Potter “…… and your friend Rupert ……”, a reference to the actor Ron Weasley, Rupert Grint.
- In Deathly Hallows, Aberforth Dumbledore is the owner of Pighead. When Tom Riddle asked for the job of the teacher of Defense Against the Dark Arts, Albus Dumbledore said that he only had friendships with the local bartenders.
- In Deathly Hallows, when Ron and Hermione are about to destroy the Ravenclaw diadem, Harry enters the Room of Requirement and gives the diadem its first appearance.
harry potter