I think Tyson's most brutal comment was, after Brendon was voted out, when Sierra came to home trying to talk him out of getting rid of her next. She told him that she wasn't some sort of mastermind, and Tyson said right to her face, "I don't think you're the mastermind. I don't think you're smart enough." She was so vulnerable in that moment and Tyson just insulted her for no reason.
It was brutal, kind of hilarious, but also a huge dick move. I'm glad Tyson mellowed out a little by Blood vs. Water.
Fin.

The Gabon jury was the worst. Marcus telling Suzie that she sucks at life. Corinne telling Suzy that she would get her vote if she agreed to have her vocal chords removed. Corinne's speech to Sugar. Yuck, yuck and yuck. What a miserable group.

There was a contestant with an artificial leg that season. Naonka said something about hoping it would fall off or not caring if it fell off.
Colton told Christina that she should just throw herself in the fire.
My vote for most awful, gag inducing player of all time is Colton, for sure. Entitled, mean, full of himself, and then to top it all off, a two time quitter.

Alecia was a horrible person. Possibly the nastiest to ever play although some have come pretty close.

No that was Alecia. I couldn't stand her.
I think Corinne's speech to sugar about her dead dad was the worst. I loved Sugar on that season and felt bad. Corinne is in my top 10 survivor villains list.

Was it NaOnka who made fun of her special needs students, and also made fun of the Asian players with Colton?
Mean on all counts.

Colton's comment about having black friends (his maid).
Shannon asking Sash if he was gay. And then when he had the opportunity to apologize, he went, "I'm just calling a spade a spade."
Don't Jdg a Bok by Its Move

What Sue Hawk said to Kelly at Final Tribal Council was pretty low-down.
No trees killed in the sending of this message, but many electrons were terribly inconvenienced.

What Will said to Shirin. He was such a nasty pos. it was really uncomfortable watching it.
Also what Courtney said about Denise, the cafeteria lady, "it's not my fault she sucks at life". though I thought it was hilarious, but still nasty.

Corinne's jury speech to Sugar on Gabon. And Will's rant to Shirin.