James was a tall, thin man with untidy black hair that stuck up at the back. During his Hogwarts years, he had an indefinable air of having been well cared for and even adored. As late as his fifth year, he started wearing glasses, although in his first year he had not.
While at Hogwarts, James became the very best of friends with Sirius Black, Remus Lupin, and Peter Pettigrew, and the group called themselves “the Marauders”. The four friends enjoyed untold popularity while at school, and particularly liked playing pranks together.
Though more mischievous than diligent, James was a very clever student. At some point, he became Chaser for his house’s Quidditch team, and he was entirely aware of his talent. He was something of an obnoxious youth for the majority of his time at school; he liked to show off and was exceptionally self-confident. He habitually ruffled his hair to make it even untidier, to look as though he’d just got off his broomstick, according to Lily Evans.
By his seventh year, James had lost the less savoury aspects of his personality, and was even appointed Head Boy, despite the fact that he had not been a prefect.