Tristran le Troubadour
Tristran le Troubadour is one of the fairly large assortment of special characters for Bretonnia that appeared only in Warhammer 5th edition and were subsequently removed when it received its more grimdark revamp in 6th edition.
Essentially a Bard, Tristran is a Bretonnian nobleman who decided to take up the Grail Quest despite always having been more of a fan of music than of fighting. Assisted by his faithful court jester Jules le Jongleur, he has been all over Bretonnia, searching for the Lady's favor and honing his musical skills. Due to his good singing he is in high demand by dukes who want to hear his sick tunes, in exchange he gets a place to rest for the night.
Jules rides one of those broom ponies and waves around a slapstick as a distraction, this is pretty much all he does in combat.
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He's trying okay?
Tristran dies in the End Times, fighting alongside Bohemond Beastslayer, it is unknown who killed him but we know that he got killed by some shitty axe.
In the game, he's basically a support character, as his special rules let him play three different songs that each provide their own unique buffs to a regiment he has joined, the songs are one about the [Lady of the Lake], one about Giles le Breton and one more about the Great Battles.