Harry Potter is known in the wizarding community as
Ron Weasley is sixth child in the Weasley family.Since he is the sixth child of the family, most of hos things are hand-me-downs, like robes,scraves, his wand, etc.He is the first person to ever befriend Harry and, in return, is why they're best friends. In most of the books, it is shown that he has a big hunger and will eat anytime he gets the chance. His personality can change based on who he is talking to, for example,if it's Harry he will be kinder and joke more but if it's Hermione, then he is more likely to act in an agressive manner and argue with her.
Unlike Harry and Ron, Hermione was born into a muggle family so she has no magical background what so ever. Luckily, she can make that up with her intelligentence.In the trio, she's the only person who can get straight A's and has a better common sense. For a good portion of the time, it was her wisdom that got Harry and Ron out of trouble.Even though she was born into a muggle family, she was the first person to autmatically understand all the spells and perform them.