#3 Terry Funk
As detailed in many wrestling documentaries, Terry Funk has just never been able to walk away. No matter what promotion the guy was wrestling for, he always put his body on the line in order to try and entertain the fans. In the process, he gained a reputation for himself as one of the craziest and most impressive extreme wrestlers on the face of the planet.
It's unlikely that was the nickname he was shooting for when he first entered the business, but that's life. If MMA was as big as it is now back in the day, Funk seems like a perfect candidate when it comes to the heavier divisions. He could slug it out with the best of them and would likely use a dominant knockout ability in order to try and get ahead. We wouldn't wanna mess with him.
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We move further into the present day with this next entry.