Tryndamere's sword was passed down from his father, whom in turn received it from his father before him, and so on. Tryndamere said his father's words of wisdom were "master using it and you can have this" - a quote from the original Legend of Zelda game for the Nintendo Entertainment System, released in 1987.
His previous story appears to have been based on the opening sequence of the eponymous 1982 movie, in which Conan's entire village is slaughtered and he swears revenge upon those responsible.
In the original stories Conan is said to hail from a nomadic people residing in Cimmeria, a northern region in his world, whereas Tryndamere comes from Northern Freljord.
Conan is said to have "become a king by his own hand" in the 1982 movie. Tryndamere became "The Barbarian King" by uniting all the peoples of his homeland under his leadership, all thanks to his friendships with most of the Barbarian leaders.
This skin also resembles Haru Glory from the Rave Master series. One of Haru's swords claims the wielder's soul in exchange for greatly increased strength. During the process, the sword will fuse to the wielder's arm.
Tryndamere was the first champion to have a non-comical Legendary skin voice-over.
Coincidentally, Guan Yu is a playable character in the MOBA Smite, together with the original Sun Wukong. Both also feature in Koei's Dynasty Warriors series.
In this skin, Tryndamere's sword-blade resembles that of the Azure Dragon Crescent Glaive, anachronistically associated with Guan Yu, despite that the weapon is a polearm and originates hardly before the Song dynasty in reality.
Ashe and Tryndamere's are Bloodsworn, a political marriage, but the two eventually developed genuine affection for one another. Tryndamere originally married Ashe in exchange for the protection of his remaining tribe after Aatrox's massacre.
Tryndamere's nemesis is Aatrox, who is the main reason why most of Tryndamere's tribe got destroyed.
He is hostile towards the Winter's Claw, who disdainfully lumped him into the Avarosa's "decadent lifestyle" even though Tryndamere actually originated from another hardy nomadic tribe, much like Sejuani.