Seamus Finnigan
Background
Seamus Finnegan is a wizard from house Gryffindor and student at Hogwarts School of Witchcraft and Wizardry. His father can't use magic, while his mother is a witch.
During the events of Harry Potter and the Sorcerer's Stone (2001) played by Devon Murray
The new students arrive at the station and take boats to Hogwarts. Professor McGonagall tells the first year students that they must go through the process of being sorted into their respective houses and she explains the points system and the house that wins the most points will win the house cup. The first year students are brought into the Great Hall and brought to The Sorting Hat. Albus Dumbledore tells the first year students the rules including that the Dark Forest is off limits. During dinner, Seamus tells Dean Thomas and Neville Longbottom that he is of mixed heritage. Later he tries to make rum out of water, but it blows up in his face.
During the events of Harry Potter and the Chamber of Secrets (2002) played by Devon Murray
Professor Sprout walks into class and tells the students they are going to be re-potting Mandrakes. She warns them that the Mandrake seedlings can cause those who hear their cry to faint and tells the class to put on their ear muffs. Neville falls down and Professor Sprout thinks he neglected his earmuffs, but Seamus tells her, Neville just fainted. Before the end of the year feast, Dumbledore asks for a round of applause for Professor Sprout and Madam Pomfrey and all of the students and professors clap, including Madam Pince. Hagrid returns and everyone gives Hagrid a round of applause.