The One

So I'm relatively new to LoL(ok I'm very new hahaha don't judge me) I first learned about the game through a friend of mine, he shared a collage picture of Aurelion Sol & Teemo around the time Riot was Hyping Aurelions release, it read Star Forging God, Still Gets Killed From This Little Shit in a meme styled captioned photo, I thought it was funny so I decided to download the game based off of that(yes yes yes I know don't judge me) but it got me thinking of all the LoL champs who was The One, The First Ever to be created, The Champion that set the bar for the Following Original Champions, The Undeniable 1st Champion of The Rift.

Disclaimer. I'm very new to this but I'm already a huge Fan. I have been doing allot of reading on most of the characters Lore but let's be honest that's allot of reading. So if there's anybody that knows who was the undeniable first Champion Riot ever created before the other Original Champions followed to be now known as The Original Champions. Please I'd like to Know.