Mago objects to Daenerys intervening and denying the Dothraki to take their share of the Lhazareen women as spoils of war. He refuses to recognize her authority as khaleesi, calling her a foreign whore, and also defies Drogo. The Khal fights him, disdainfully disarming himself and deliberately accepting an arakh wound to show contempt for Mago's combat skills before slitting his throat with his own weapon and then pulling his tongue out through the neck wound. Drogo brandished the tongue for his court to see and casually tossed it on a pile of heads next to his seat.
Shortly after Mago's death, the wound he gave Drogo begins to fester, eventually leading to Drogo's incapacitation and subsequent death.
|Game of Thrones Season 1 appearances|
|Winter Is Coming||The Kingsroad||Lord Snow||Cripples, Bastards, and Broken Things||The Wolf and the Lion|
|A Golden Crown||You Win or You Die||The Pointy End||Baelor||Fire and Blood|
In the books
In the A Song of Ice and Fire novels, Mago is a member of Khal Drogo's khalasar, serving under Ko Jhaqo. He complains to Drogo that Daenerys deprived him of his rape victim, a Lhazareen girl named Eroeh (who does not appear in the TV show) - but does not defy or fight with Drogo after the latter verbally denying him. Drogo is not injured by Mago, but during a battle against the khalasar of Khal Ogo.
Following Drogo's death, Mago becomes a bloodrider for Jhaqo, one of the several Kos that proclaim themselves Khals, followed by a portion of Drogo's Khalasar. He seizes Eroeh, rapes her and gives her to his new Khal. Jhaqo gives her to his other six bloodriders, who gang-rape her, and finally cut her throat. When Daenerys hears about this, she swears furiously that she will pay both Mago and Jhaqo back for what they did to Eroeh. So far she has not had a chance to fulfill her oath.
In the DVD commentary for the episode "The Pointy End", George R.R. Martin comments on the "butterfly effect" created when a character is killed off in the TV series, given that Mago continues to appear in the books.
In an interview dated July 12, 2011, Martin confirmed that Mago would be a recurring character in the sixth book.