Not a global reputation yet because he is fairly young (he is growing much faster than the average dragon due to the great nutrition he receives, namely a steady stream of adventurers from the nearby city) but he has been the bane of a small country (~the size of Luxemburg) for the last few months, and killing him is getting urgent because it’s already spring but the fields are still frozen solid due to his influence on the local climate.
Though a famed dragonologist did notice that his behavior changed considerably; instead of randomly raiding villages he started targeting Skyfleet installations up north, pushing the city’s Skyfleet back and getting them away from his mountain.