The best of the best! EVERYONE will know that YOU KILLED MOBZILLA!!!!!!! You did, didn't you? No? Then take it off. Go on, take it off. Now. If you didn't earn it, then you can't wear it. That's the rule. Go kill one of each mob needed to make a Big Bertha. Then take that Big Bertha, and maybe a few Cephadromes, and go kill Mobzilla. In gamemode 0. That's right. Creative mode doesn't count. Earn it, or don't wear it.
Besides being the coolest armor, ever, this is an incredible badge of honor that only a select few, the manliest of the manly, can wear! Are you tough enough to earn the right?
The only thing better than Mobzilla armor is Royal Guardian armor. But, well, you're probably not good enough to earn that... are you?
Protection X everything.