the hackers name is fvendetta31 and he coundt get hit and would fly around i have screen shotted him flying around
If they have a blue name, I believe it means they are a spectator in Gamemode: Creative. As for the armor, if you are spectating and right click on a player, you can see their inventory, and armor. You can attempt to take the stuff, but they will still have everything, but you will have a copy. He likely just put it on then, and flew around with it. What I am confused though is that you saw him, so he wasnt likely spectating.
( First Picture) During the changed of the map switching, and before the start of the game there is a period when people can fly around. This is no hacker doing these matches anyone can fly around until the start of the game. Then that's when you are no long able to fly. (Second Picture) For this one I agree that this person was using some sort of hacked client to fly to that top area. The picture is quite hard to read from a distance. Is there any other screenshots that are a bit closer?