Gorillaz- On Melancholy Hill video questions?

2 questions... Why is russel so big? He's kinda useless as a drummer now because he probably wont even fit on Plastic Beach. Second, who in hell is the gas-mask guy who pulls the manatee in the water and why does he make Murdoc have a concerned look and make cyborg noodle shoot him? On the UK store there is a shirt that I think is him and its called Glastonbury, but when I look him up it comes up as a city in England. Who is he?