Chromos is not apart of League of Legends
Chromos was a magmanarium soldier who was raised in a royal family. He was quite the fighter and trained very hard to prove he was able to take over the throne that his father sits in. Chromos believed he was ready to fight his father and claim the throne, but was sadly mistaken and was taken down by his father and told he isn't even close to being strong enough. Desperate to take over the throne from his father, Chromos researches dark magic and begins to make his own fighting skills and techniques. After years of studying this dark magic and creating his own spells, Chromos had created a Magma Blade forged only for his hands and it was runed with dark magic to burn his foes when striking them down. Chromos determined to defeat his father after not being able to do so before, walks into his fathers hallway and awaits for him. Chromos' father notices that Chromos is waiting for him and proceeds to agree and fight. Chromos using his new skills effectively in his fight, wins the battle and claims his homeland and throne. He renamed his home to, Magmanarium Mountain and named the people, Magmanariums. Chromos decides to join the League of Legends on the fields of justice to prove to his people, he is right for the throne.