Iwan Rheon is a Welsh actor and musician. He is best known for his roles as Simon Bellamy in the E4 series Misfits (2009-11), Ramsay Bolton in the HBO series Game of Thrones (2013-16), and Mötley Crüe guitarist Mick Mars in the film The Dirt (2019). He has also appeared in the series Vicious, Riviera, and Inhumans.

Simon Bellamy is a fictional character from the British Channel 4 science fiction comedy-drama Misfits, portrayed by Iwan Rheon. Simon was sentenced to community service for attempted arson which leads to him gaining the power of invisibility, reflective of his personality in that he often feels ignored. Simon has been involved in a storyline which saw him manipulated by his probation worker who he murders. In the third series finale Simon travels to the past and Rheon later confirmed that he would not be returning for the fourth series.