What was Mike Tyson like back in the 80s-90s?

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The Mike some people knew was this super humble podcast shroom-talking dude, but I always knew he was named Iron Mike for a reason. I heard in a Jamie Foxx interview on a night show that “Mike would punch you for wearing the wrong t-shirt”; if he used that as an example, I could only imagine what he was like.

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To those who grew up and followed that era of boxing, or people that have heard stories, what was Mike like? Was he a killer, or was he more than that? What was the fear factor he inflicted on his opponents? Do you think he was the best heavyweight of all time besides Ali?