The Man Baby
I will tell you the reason that the man is unidentified. It's because he's not a member of Parliament Funkadelic. He's not a member of any band. He's not even supposed to be at the Grammys.
He's a Man Baby.
What is a Man Baby? Quite simply, he is the grand cosmic fusion of a man and a baby. There are several ways in which Man Babies are made. One way is for a mature adult male to suffer brain damage and revert to a childlike state. I have seen this happen to a lot of men who have lost Ninja Fights big time. They bit off more than they could chew.
There is also another way to create a Man Baby, and this is the way the Man Baby in the photo was made. A baby is born that ages rapidly. It grows to the size and appearance of a middle-aged man in a few weeks and then stops aging. What you are left with is a adult body with the mind of an infant.
Look at him. Isn't he magnificent? Standing there upright, arms posed, looking defiant. He just had a big meal of Gerber and his belly is stuffed. His diaper is clean, but that could change at a moments notice according to his whim. He just waltzed into the Grammys without an invitation and is enjoying the attention he rightfully deserves. That look on his face is a Man Baby that knows the score.