My choice would be Nataliya Kuznetsova (Amazonka). She is one of the most muscular, strongest fbbs of all time and she just keeps getting more superhuman. I can only imagine what a session with a real-life human tank would be like. I have seen videos online of her crushing a full soda can with one hand, crushing a man's head between her thighs and lifting full grown men in her arms like they were weightless. I would imagine that she might have an issue traveling to the US since she is a Russian national.
Do you have that video of her crushing the soda can? I'd love to see that and haven't found it anywhere...