Icelandic actor of stage and screen who was best known for his role as Robbie Rotten on the television series LazyTown from 2004 until 2014.
He trained at the Iceland Academy of the Arts and went on to perform in productions of Cyrano de Bergerac, Singin' in the Rain, and A Midsummer Night's Dream at the National Theatre of Iceland.
He founded Rainbow Children, a nonprofit foundation dedicated to ending bullying in schools.
He had a son and three daughters with his wife Steinunn Ólína Þorsteinsdóttir.
He provided voiceover work for the 2006 film Night at the Museum, which starred Ben Stiller.