1. Jack Gleeson is an Irish actor, best known for his portrayal of Joffrey Baratheon in the HBO television series Game of Thrones.
2. He attended drama classes when young with his sisters Rachel and Emma who are also actresses in Ireland.
3. Gleeson is a student of Trinity College, Dublin, studying philosophy and theology and he is also a member of DU Players.
4. Gleeson began acting at the age of seven in the Independent Theatre Workshop. In 2010, he appeared in a leading role in All Good Children.
5. Gleeson starred as Joffrey Baratheon in the HBO series Game of Thrones. He is a founder and artistic director of Collapsing Horse Theatre Company, which is based in Dublin.
6. In 2012, Gleeson indicated an intention to retire from acting to pursue an academic career once his work on Game of Thrones was finished. In 2014, Gleeson confirmed he would be permanently retiring from acting after concluding his work in Game of Thrones.
7. In 2015, Gleeson starred in the puppetry shows Bears in Space created by his theater company Collapsing Horse and in mid-2016 the show premiered in New York.