Questions about incoming Galio's rework Teaser

Hello everyone, so i am super hype for Galio he is finally going to get his rework after a long time when he was totally forgotten. But the teaser shows us that he kinda looks way different and his role is actually went so different too He is going to be bigger? ofcourse i already can believe that Is he going to be a vanguard or warden tank mage? i don't know waiting on responses Picture shows us that he is gonna be a great supporter of team while he is tank mid lane still and that's interesting in teamwork Also, why the man next to lux looks like helmet bro? is he like also future champion or just incoming future skin for maybe another Demacian champion