Harry Potter

When I was reading the Harry Potter series, I came across many things. My attention was first caught when I saw that all the characters' names had a purpose in characterizing the character as well. For example, the first thing I noticed was that Sirius Black, Harry's Godfather, was named Sirius and he was an animagus who turned into a dog, because there is actually a star name Sirius which is also called the Dog Star. Similarly, Lupin's name came from the word Lupine. Also Dolores Umbridge's first name came from the word dolorous which means to cause pain, which indeed coincides with her nature perfectly.
These were some of the things which awed me while reading the Harry Potter series. It was stunning that J.K. Rowling puts so much thought in even naming her characters and characterizing them.