Game:Scene A Character #3 - Page 92

Regulus Black who was a Death eater abandoned Voldemort after he mistreated his family house elf Kreacher.
Narcissa Malfoy

Narcissa Malfoy asking Snape to help Draco

Aberforth Dumbledore was the owner of Hog's head.
Aragog

P.S. There are almost clear hints of Ron and Hermione to be together in the third book itself. When Hermione breaks down in tears holding Ron after Buckbeak's news of death sentence,****it was a total Ronmione moment**** Even my shipping mind sees their hints to be together in the first book itself and I just love the trio...and the movies completely ruined the Harry and Ron friendship which I hate the most and Harry-Ginny too...Though the movie makers quite well make up with the relationship of Ron and Hermione finally in Deathly Hallows parts 1 and 2...

Aragog telling Ron-Harry about Hagrid rescuing him.

Firenze took the duty to teach Divination to Hogwarts students after Umbridge sacked Trelawney in Harry's fifth year.
Charity Burbage
P.S. I completely agree with you...IMO fifth movie is a complete disaster when compared with the book, the movie left so many important scenes and features from the book...And yeah I too believe most of the Harry-Hermione shippers are from watching movies only and they haven't read the books at all, and I seriously believe Harry and Hermione are really boring together, yeah they are best of friends but their relationship is more like a sibling and intact Harry cleared it in the seventh book itself to Ron (and again in the movies they completely skipped it and thus making Harmony shippers completely make their mind that they are perfect for each other )and Harry was never ever interested in Hermione whereas Romione always do for each other. And J.K. Rowling had so well written the books they we can visualize each scene written by her and I can't wait for 31st July for Cursed Child book.Even Dramione shippers are from movies who made their mind seeing beautiful Emma and handsome Draco and how it would be great seeing both of them together which is complete out of book.

Charity Burbage killed by Voldemort

Slughorn gave his memory of Horcrux talk with Tom Riddle to Harry on the night of Aragog's funeral in Hagrid's cabin.
Quirell
^Yupz...Ronmione forever

Quirell trying to kill Harry and in turns got killed

Petunia got a howler from Dumbledore in the summer holidays of Harry before the starting of his fifth year in Hogwarts.
Aunt Muriel

Aunt Muriel telling Ron off for long hair