Colin and Dennis Creevey

Colin and Dennis Creevey are Muggle-born; their father is a milkman. Colin is one year younger than Harry and is in a regular state of excitement; he is delighted at the discovery that he is a wizard, and takes photographs of memorable people, objects and events to send home to his family. He is also star-struck of Harry and goes as far as possible to pursue him regularly for pictures, but Harry quickly tires of Colin's constant attention. During one of Gryffindor's Quidditch practices, Colin sits in the stands and repeatedly snaps pictures of Harry, and inappropriately photographs Ron vomiting slugs after his curse directed at Malfoy backfires. Ironically, Colin's camera later proves to be a lifesaver when he attempts to take a picture of the basilisk, therefore avoiding the creature's direct and fatal eye contact, and is only Petrified.
Dennis is two years younger than Colin and shares his brother's near-constant enthusiasm; he can barely contain his excitement about having fallen out of his boat and into the lake on the way to the castle and being pushed back in by the resident giant squid. During the Triwizard Tournament, he and Colin try to rework a stack of "Potter Stinks" badges into reading "Support Harry Potter," but only succeed in changing them to "Potter Really Stinks." In Order of the Phoenix, Dennis joins Colin in the D.A., even though he is underage at the time and therefore prohibited from visiting Hogsmeade. At one D.A. meeting in the Room of Requirement, their attempts at the Expelliarmus Charm go awry and result in books flying off the shelves.
Despite being too young to take part in the Battle of Hogwarts, Colin sneaks back into the castle to participate, and dies in combat. His body is recovered by Neville and Oliver Wood, and Harry sombrely notices how small he is in death. It is not stated whether Dennis was involved in the battle.
Hugh Mitchell played Colin in the film version of Chamber of Secrets, and voiced the character in the Order of the Phoenix video game. Dennis is the lone Gryffindor D.A. member who has yet to appear in any of the films