New ADC champion upcoming theory

OK, random person who actually decided to open my post, recently I watched some lore videos and interaction ones, because I was bored. but from what I get there are only 5 darkin beings left in Runeterra, but we know only about 3 - Aatrox, Rhaast and Varus. So what do you think? Is the new upcoming champion going to be in any way related to them, if yes, tell me what weapon should he BE (the darkins are a race in a weapon like physical form which corrupt the first person to touch them and take over their body, like Varus' bow) and if no, then tell me where do you think he would be from.