Just vegging in front of the Incredibles…
Here’s the question - just with what they’re standing up in, which Hero walks away from an all-comers brawl?
NO MAGIC. NO MANA. And if you’ve got wings…they have to provide the correct power-to-weight ratio or you’re walking with the rest of us.
I’m going to put this guy out there as an early tip, but I’m willing to be convinced otherwise…
Good suggestions, but I think a mace of that size is a disadvantage - it’s a bit stubby
Sword+axe > mace for me 
Khagan and Leonidas seem to me about the same. Both tough guys with sword and shield. I think I would give Khagan the edge due to wearing arm protection instead of needlessly flexing.
My champion:
Kageburado has one of the most realistically sized weapons. Even though Azlar is a buff lion, I don’t think he could actually dual wield those cleavers. And I doubt his fur offer a better protection than Kage’s armor
Ah, but his arm protection is liable to slit his own throat if he looks down at his pointy shoes!
Kage is s good choice 
Her shield may be puny, and her sword may be small…
…but she wields her scowl and side eye with deadly force.
“Killing spoon”, incredible hot cauldron and many, many, maaany parts of cloths.
Who need mana when you have porrige?
However, as @rook pointed out with typically perceptive observation
I’m vaguely worried about her boot being unlaced
It’s likely that as she swings the mortal blow, she trips on her own neglected footwear and comes to an untimely end.
In fact, Aife’s boot is unlaced to allow quick access to a Hidden Blade, stolen from a defeated foe, and now used for finishing off her sworn enemies.
Not a bad shout, however his cloak might prove his Achilles heel (keeping it Greek)…
Until he thtows it over his opponent’s head!
What about Ares?
Massive full armour, no cape, big sword
Do you have a pic of him? I can’t remember what he has
Yer, I thought he was just waving his big hand around
Are we excluding heroes alive by magic?
No, but they’re only allowed the physical strengths depicted in the image. The vampires have the equivalent strength of their build, for example, not any super strength based on myth.
