User blog comment:Ids5621/TIME TO RE-ESTABLISH MY POSITION ON THIS WEBSITE: GANON RE-VAMP/@comment-1488078-20110130113338/@comment-1081342-20110130113821

Ah yes, the chest. The whole chest/barrel neck thing is completely meant to appear bulky. The whole thing is meant to be a suit, over thinner under armour. The barrel is meant to be like a neck-hole. Basically in all stars, Ganon works in a chemical plant, and the armour is a multi resistant suit to protect him from the various harzards present there.

Though I just gave away more spoilers, it clears that up :)