I’d have to give the edge to Han because he’s basically Mal and Wash wrapped up into one character.
Supposedly, in the last Firefly episode, a cardboard cutout of Han in carbonite can be found in the engine room. I’ve never seen it before. But we have to keep in mind that since FF/S is in the future, they would almost certainly know of Star Wars. It’s probably like what “Macbeth” or another classic is to us.