Appearance
Rowling introduces Ron as “tall, thin and gangling, with freckles, big hands and feet, and a long nose.”[PS Ch.6] Ron has the trademark red hair of the Weasleys and is indeed one of Harry’s tallest schoolmates, even outgrowing some of his older brothers. Rowling states in the novels that Ron has freckles, but Rupert Grint, the actor who plays Ron, has none. Rowling has also stated that Ron has blue eyes.

Personality
Rowling in an interview described Ron as very funny but insensitive and immature, “There’s a lot of immaturity about Ron, and that’s where a lot of the humor comes from.” Commenting on Ron’s character development in the final book, Rowling explained that “Ron is the most immature of the three main characters, but in part seven he grows up. He was never strong footed, people see him mostly as Harry’s friend; his mother had actually wanted a girl and in the last book he finally has to acknowledge his weaknesses. But it’s exactly that which makes Ron a man.

Magic and skill
Ron is given Charlie Weasley’s old, chipped wand, which is made out of ash and has a unicorn hair sticking out of the end. He holds the wand together with Spellotape after nearly breaking it in half at the start of Chamber of Secrets, but it malfunctions dreadfully after this, backfiring spells, making strange noises, and emitting objects from the wrong end. Ron’s new wand is fourteen inches, willow and unicorn hair. He receives this new wand before the start of his third year at Hogwarts. He has also shown signs of incredible tactical ability, as evidenced by his skill of Wizard’s Chess (which is played exactly like normal chess but with living pieces). Ron’s talents are rarely shown, but he, like the other DA members, survives a violent encounter with adult Death Eaters in Order of the Phoenix, and it is implied that during the Death Eater assault in Half-Blood Prince he held his own quite well because he was being helped by Felix Felicis, the good luck potion. In Deathly Hallows, Ron loses his original wand, and takes Peter Pettigrew’s wand for his own. Following this, Ron begins to demonstrate more aptitude and general knowledge, along with a sudden spurt in maturity after a terrible row with Harry. For a while, he effectively leads the trio in the hunt for the Horcruxes while Harry suffers a major depression.

Rowling has stated that Ron’s Patronus Charm takes the form of a Jack Russell terrier, “a really sentimental choice” as Rowling herself owns a Jack Russell.