Theon Greyjoy 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.

Theon's complex and troubled relationship with both his family and his captors is central to the character's arc throughout the novels and its television adaptation.

[1] Introduced in 1996's A Game of Thrones, Theon subsequently appeared in A Clash of Kings (1998) and A Dance with Dragons (2011), in which he is reintroduced as “Reek”, the tortured victim of Ramsay Bolton.

As an adult, Theon was arrogant, cocky, and proud until being imprisoned by Ramsay Snow, who is the eldest and bastard son of Roose Bolton.

Theon Greyjoy becomes a trusted companion of Robb Stark on the battlefield, participating in the North's victories at Riverrun and the Whispering Wood.

Robb sends Theon as an envoy to Pyke, seeking Balon Greyjoy's aid in his rebellion against House Lannister.

Theon later encounters Mance Rayder (disguised as Abel the bard) and his spearwives, who ask for his help in freeing “Arya Stark”, having been sent by Jon Snow.

When the alarm is raised, Theon jumps from Winterfell's battlements with Jeyne and is captured by Mors Umber, who sends him to Stannis Baratheon's camp several days' ride away.

Theon is kept prisoner by Stannis, who notes that he may have useful information about the Boltons but means to execute him for the supposed murders of Bran and Rickon.

Theon is insulted when he is given command of a single ship to raid the Stony Shore and contemplates sending a warning to Robb, but ultimately decides to remain loyal to his family.

Theon lures the Stark garrison away from Winterfell and easily captures the castle, but is forced to execute his old mentor Ser Rodrik Cassel when he refuses to yield.

Ramsay disobeys his orders to free the Ironborn and instead flays them all and sacks Winterfell, before taking Theon back to the Dreadfort as prisoner.

Theon is taken captive and tortured in an unknown castle, but later manages to escape with the help of a serving boy who claims to work for Yara.

Theon is subsequently brutally tortured, flayed and seemingly castrated by Ramsay, who forces him to rename himself Reek, and beats him until he submits to his new name.

He tries to avoid her until Ramsay's psychotic paramour Myranda leads Sansa to Theon's sleeping quarters, a cage in the kennels.

While Ramsay and the Bolton army attack Stannis Baratheon's forces, Sansa makes another escape attempt, but is caught and threatened by Myranda.

Theon returns to the Iron Islands to discover that Balon is dead, and offers to support Yara at the Kingsmoot, a ceremony where the Ironborn elect their new leader.

However, the Kingsmoot is won by Theon's uncle Euron Greyjoy, who admits to killing Balon but wins over the Ironborn by promising to conquer Westeros through marriage to Daenerys Targaryen, who possesses the only known living dragons in the world.

Theon's PTSD is triggered after watching the carnage and he jumps overboard, being rescued some time later by survivors of the battle unimpressed by his cowardice.

Yara decides to retake the Iron Islands while Euron is preoccupied in King's Landing, but gives Theon her blessing to travel to Winterfell with his men to stand with the Starks against the White Walkers.

At the war council before battle, Bran (who has since developed his greenseeing abilities to become the Three-Eyed Raven) declares that he will wait in the Godswood to lure out the Night King, commander of the White Walkers.