However, the character's personality appears to undergo a transition after he joins Dumbledore's Army in Harry Potter and the Order of the Phoenix.

Eventually, Neville becomes the leader of Dumbledore's Army during Harry, Ron and Hermione's absence searching for Horcruxes.

He is one of Harry's strongest supporters over the course of the series, and becomes close friends with Ron, Hermione, Ginny, and Luna as well.

After Neville confronts his friends about their willingness to break school rules, the headmaster Albus Dumbledore awards him ten house points for his bravery.

In Goblet of Fire, Dumbledore reveals to Harry that Neville was raised by his grandmother because his parents were tortured into insanity by Death Eaters.

In the epilogue of Deathly Hallows, which is set nineteen years later, Ginny mentions that Neville is now the Herbology professor at Hogwarts.

It very good to see him finally being a help as opposed to making things worse, I'm looking forward to the 5th film, it will be interesting to almost play a different character."

Rowling revealed more information about Neville when she stated that he married Hannah Abbott, a Hufflepuff classmate, who became the landlady of the Leaky Cauldron.

[9][10] Lewis described Neville as an unexpected hero and claimed he could have fulfilled Harry's role as the "Chosen One" who battles Voldemort.

[11][12] The entertainment website IGN ranked Neville as the 6th greatest Harry Potter character, calling him a "quintessential dimwit-turned-hero."

[14] Emmet Asher-Perrin of Reactor wrote that Neville has "quite a following in the Harry Potter fandom, and for good reason—he is humble and noble, brave and kind".