Zacharias Smith

Zacharias Smith is a Chaser for the Hufflepuff Quidditch team. Unlike the majority of his housemates, Zacharias does not appear at all likeable, and his behaviour irritates most people, especially the series' main protagonists. He makes his first appearance in the debut meeting of the D.A. in Order of the Phoenix, but was the most skeptical of Harry's claims. Hermione later admits to Harry and Ron that she only invited him because he overheard her talking with Ernie and Hannah about joining. Later in the year, however, Zacharias is as eager for more D.A. lessons as the other members.
In Half-Blood Prince, Zacharias is first mentioned as being on the receiving end of one of Ginny's famed Bat-Bogey Hexes. He also splits Quidditch match commentary duties with Luna during the term; however, his jeering at the Gryffindor team is highly unpopular, to the point where Ginny deliberately crashes into the announcer's pit following Gryffindor's win over Slytherin. He is not seen again until the day after Dumbledore's death, when his haughty-looking father escorted him from Hogwarts before the funeral, implying that he was not supportive of Dumbledore and his policies. In Deathly Hallows, Zacharias attends Hogwarts under Snape's rule as headmaster. Before the Battle of Hogwarts, he is seen pushing past younger students for the evacuation point rather than staying to fight alongside the D.A.
Nick Shirm briefly appeared as Zacharias in the film adaptation of Order of the Phoenix, but was not mentioned by name; he was identified as "Somewhat Doubtful Boy" in the closing credits. Shirm also voiced the character in the video game adaptation of Order of the Phoenix