Harry potter
100

how old was harry when he started Hogwarts?

11 years old

200

who puts harry's name in the goblet?

fake moody

300

who killed Sirius Black?

Bellatrix 

400

what were the items that the Horcruxs were in in the sixth book

Tom Riddles diary, a locket, the ring

500

who gets petrified in the 2nd book?

Ginny, Hermione, Mrs.noris, sir nicholas