The Story of Garen
Garen is Demacia's most celebrated soldier and the living embodiment of what the kingdom claims to value: valor, duty, loyalty, the willingness to put one's body between the innocent and the thing threatening them without asking for recognition or reward. He genuinely believes in this. This is not performance. Garen is one of those rare people who is exactly what he appears to be — a man who took the ideals he was raised on seriously and has organized his entire existence around them.
The complication in his life is magic. Demacia persecutes mages, and Garen has spent his career enforcing — or at minimum not obstructing — the mechanisms of that persecution. His sister Lux is a mage. He knows this, or suspects it, with the particular not-quite-knowing of someone who cannot afford to know. The day he acknowledges it is the day his loyalty to Demacia and his love for his sister become irreconcilable, and he has not yet found the principle that resolves that conflict.
He has fought in more campaigns than most Demacian soldiers survive to count. He has protected people who could not protect themselves. He has done this without the magic that would make it easier, armed with a greatsword and a conviction that is the closest thing to divine power available to an ordinary man. His legend in Demacia is earned. The cracks in the legend are earned too, by a kingdom that puts its hero in a position where his goodness and his loyalty point in different directions.