Tommen Baratheon is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin, and its television adaptation Game of Thrones. Introduced in 1996's A Game of Thrones, Tommen Baratheon is the youngest son of Cersei Lannister from the kingdom of Westeros. He subsequently appeared in Martin's A Clash of Kings (1998), A Storm of Swords (2000), A Feast for Crows (2005) and A Dance with Dragons (2011). After the unexpected death of his brother Joffrey Baratheon, he is crowned king of the Seven Kingdoms, although he soon falls under the warring influences of his mother Cersei and wife Margaery. In the HBO television adaptation, Tommen Baratheon is portrayed by Callum Wharry from seasons one to two and by Dean-Charles Chapman from seasons four through six. Source: Wikipedia (en)