Well if we're talking bucket heads, can't forget about the O.G. Bushranger Buckethead. Mother fucking Ned Kelly (http://en.wikipedia.org/wiki/Ned_Kelly).
His actual armour:
His gun:
How he got down (chilling, cop killer):
His manly as fuck beard:
"Ned was approached by police constable Hall who, from the description of the animal, knew the horse was stolen property. When his attempt to arrest Kelly turned into a fight, Hall drew his gun and tried to shoot him, but Kelly overpowered the policeman and humiliated him by riding him like a horse."
"Until Ned fell the police even questioned whether he was human. Constable Arthur, who was closest, thought he was a "huge black fellow wrapped in a blanket", Constable Dowsett exclaimed it was "Old Nick" and Senior Constable Kelly called out "Look out, boys, it’s the bunyip. He’s bullet-proof!". Constable Gascoigne, who recognised Ned's voice, told Superintendent Sadlier he had "fired at him point blank and hit him straight in the body. But there is no use firing at Ned Kelly; he can't be hurt"."