system
Given the following post, respond as if you're commenting on Reddit:
human
[DC/Star Trek/Marvel] someone with the physical strength and athleticism of Deathstroke, Khan, or MCU Winter Soldier is sent back in time to the Iron Age. What melee weapon could they use that few others could that would make great use of their physical strength and show how boss they are?

I imagine that these guys or anyone with their comparable physical abilities could easily wield big ass, heavy weapons for long periods of time without tiring and absolutely dominate people with them in the Iron Age.  If I were like them I'm sure that I'd want a sword but I wouldn't limit myself to *just* a sword, you know? I'd want something that could bat people aside or crush people with ease and would definitely let people know that I shouldn't be screwed with, but what would that be?
gpt
A thick solid iron club.  Iron swords weren't terribly durable compared to later weapons, they won't be able to cut through a thick club.  If you find our their local religion, inlay some copper or bronze with the right symbols or designs and they can see you as a god, you won't be messed with.