Ron Weasley

 Ron Weasley born Ronald Weasley to Arthur and Molly Weasly is the sixth son and was in the same year as Harry and Hermione in Hogwarts. He was best friends with Harry and Hermione. A chance meeting with Harry aboard the "Hogwarts Express" in his first year established a lifelong friendship between them. The Weasly family was a pure blood family and lived in "The Burrow". Ron being the last of six sons always had (sort of) inferiority complex and his best friends being the famous Harry Potter and clever Hermione didn't help much.

Harry and Ron when they first met aboard "Hogwarts Express"

"I'm the sixth in our family to go to Hogwarts. You could say I got a lot to live up to. Bill and Charlie have already left — Bill was Head Boy and Charlie was captain of Quidditch. Now Percy's a prefect. Fred and George mess around a lot, but they still get really good marks and everyone thinks they're really funny. Everyone expects me to do as well as the others, but if I do, it's no big deal, because they did it first."
                               —Ronald Weasley talking to Harry Potter the first time they meet each other

The Burrow - Where the Weasley family lived 

Ron and Harry had many adventures together, including trying to save Philosopher's stone from being stolen, saving Ginny from Chamber of Secrets, Forming Dumbledore's Army, Hunting Horcruxes and relentless fight against Dark arts and Voldemort. Ron was also the co-conspirator in many dubious plans concocted by himself and Harry even though Hermione persistently tried to dissuade both. He was very afraid of Spiders esp the Acromantula. 

Harry and Ron planning together

     In his fifth year, Overcoming his intense nerves, Ron Weasley became the Gryffindor keeper and led the team to two Quidditch cups. Also, during his time at Hogwarts, Ron served as a prefect, fought with Dumbledore’s Army and helped Harry through many challenges including his hunt for Horcruxes. Due to him feeling inferior to Harry led to being jealous and quarrels between them two times - once in their fourth year when Harry's name came up in the Goblet of Fire and another time when they were hunting for Horcruxes. Harry saved Ron's life when Ron gulped poisoned mead in Slughorn's office by shoving Bezoar down Ron;s throat. In turn Ron saved Harry's life when harry dived into the pond to fetch the sword of Gryffindor with the Slytherin's locket around his neck (which tried to strangulate him).

Ron and Hermione

Ron first had feelings of "annoyance" for Hermione which later turned to admiration and love. After the defeat of Voldemort, Ron Weasley married Hermione Granger, had two children named Rose and Hugo, became an Auror and also helped out at Weasleys’ Wizard Wheezes shop.

Ron and Hermione with Children Rose and Hugo