Kled, Skaarl, the Ironspike Mountains and Summoner's Rift
So it's early to be throwing out assumptions about Kled and Skaarl, but I believe I have a reasonable theory. So based on the teaser and many twitter posts it is clear that 1. The soldiers are Noxian. 2. The "battle" takes place in (near) Noxus 3. Kled is defending a mountainous territory. Now here's where I begin to go into theory and speculation. I believe Kled is the/a defender of Summoner's Rift itself. It sounds like a stretch, but hear me out. He has a VERY prominent role as a defender he patrols and he is based around stopping trespassers. Since it is stated that the land he is defending is the Northern plains, near Noxus, and there are mountains beyond the border, i conclude that those mountains are the Ironspike mountains which exist just north of Noxus on the map of Valoran. This would be the southern Ironspike mountains, but in the northern Ironspike mountains exists Summoner's Rift, maybe he is a/the bulwark against those who want the magic that resides there.