For reasons as yet unexplained, the plot is full of superpowered clones of brilliant historical figures

Oh my. It really does sound as if I ought to see this. I've heard it described before and thought That sounds interesting, but hearing this puts it on a whole new level.

I promptly exclaimed, "He's not obscure!" But I will acknowledge that I may be the only person who thinks so.

Well, I didn't think he was particularly obscure. ;-)