Rex Tyrannus
280lbs of gross stupidity
the Wiki article linked above said:A variation of the flail is called a chain mace. It composes of a long chain usually wrapped in leather or another protective material, and has a steel ball at the end of the chain.
Perhaps not a misnamed unit, then? And BTW, I always thought the weapon weilded by Civ macemen was a mo(u)rning star. Thanks, Wikipedia, for the education.