+1Dragon, the timing to reveal his hype is already lost, no one barely cares about him, and the thing keeping revolutionaries even relevant is Sabo.
I am going to have to say... Mihawk. I like him but come on.
Look at Mihawk, look at Dragon, the difference is that Mihawk at least did something in the war, but then we spent the years without hearing anything about him.
At the very least Shanks had the hype of Yonko around him, he stopped Kaido, stopped the war and so on.
Post Wano cross guild was barely acceptable as a timing for Oda to realize " wait this thing is on the final bits, I need to hype him "
But the WSS plot and relevance is utter trash, no one cares about the title, no one wants it bar Zoro and Vista.