But I will say that not all great actors are great mimics. I personally don't need a biopic performance to be a great imitation of the original person for it to be effective. There's a magic sometimes in the synthesis of the actor with the material.

However, all that being said, a guy who could have nailed Hampton's tones was Eddie Murphy. It's a shame he didn't make a great movie in that role in the 80's (of course the funding prospects for something so "transgressive" in those days was probably way more difficult).

Maybe it might still be possible through "the Irishman"-style de-aging??? LOL no god forbid...Fred Hampton with White Walker blue eyes isn't something the world is ready for.