Neville Longbottom appears in the Harry Potter book series by J.K. Rowling.
Neville Longbottom is a major character in the Harry Potter series. He is a Gryffindor student at Hogwarts School of Witchcraft and Wizardry and is best friends with Harry Potter, Ron Weasley, and Hermione Granger. He is known for his courage and loyalty, and is often seen as an underdog. He is also a member of Dumbledore's Army.