If you've seen Chael Sonnen work as a commentator for FUEL or as a coach on The Ultimate Fighter, you know he's not an evil hate monger. In fact, he's probably the most intellectual and good-hearted person on this list.
Why then, is he number one?
Because when Sonnen is in full-blown promotion mode, he's a walking sound byte. As Jon Jones is likely to find out soon, no one is safe from Sonnen's vituperative stylings when pay-per-view sales are on the line. Yeah, when Sonnen is on his best behavior, he's great. But when he's bad, he's the worst.
I mean where do you even begin? I suppose it all starts with Anderson Silva.
Sonnen verbally eviscerated the longtime champ in every way possible. He criticized his ability, his training partners; he even said he was going to pat his wife on the butt—something he then chastised ESPN's Dan LeBatard for bringing up on his show, going as far to call him a fraud and a Charleton even though it was 100 percent true.
But Sonnen didn't stop at Silva. He once said he saw the Nogueira brothers trying to feed a carrot to a bus. He told Vitor Belfort to show up at his hotel room and pick up his luggage. He likened the country of Brazil to a bunch of homeless kids playing in the mud. Sonnen has done more damage to Brazilians than Dengue fever.
There's no doubt that all these things were said by Sonnen's persona, and not the man himself. And I truly wonder if Sonnen, being as smart as he is, regrets some of the things he said in order to hype himself up.
None of that really matters now though. Sonnen has built himself into one of the UFC's biggest stars by way of his mouth, and the fact is, he's probably been more disrespectful than everyone on this list combined.