The many neutral monsters on the Fields of Justice are constructs inspired by real creatures from Runeterra. The Baron Nashor you see on the map is actually an incomplete facsimile of the true Baron Nashor, who is now the subject of myth and legend. The story goes that Baron Nashor was a ferocious worm that ruled the Serpentine River, which flows through Summonerís Rift. He was such a fearsome and powerful beast that even the armies of Demacia and Noxus steered clear of the river, unwilling to chance an encounter with the Baron.
When Summonerís Rift was constructed, the Baron vanished, leaving no conclusive evidence as to where he went or why he left in the first place. Obviously the rumor-mill has churned out many explanations, but all we know for sure is that the Senior Arcane Architect for the Summonerís Rift arena was said to have crafted the version you see today from no more than a molted scale and interviews with those who had seen the beast and lived.
i googled baron nashor and copy pasted the wiki, lol idiot :D
SC2 : Koroioz 450 DALLAS MAVERICKS 2011 NBA CHAMPIONS