Wladimir Klitschko has revealed that Tyson Fury's extreme comments on homosexuality made him feel 'sick'.
The IBF, WBO and WBA heavyweight champion defends his titles against Fury at Dusseldorf's ESPRIT Arena on November 28 and, having already described his desire to give his challenger a form of "therapy" by defeating him in the ring, Klitschko has spoken of his disgust at Fury's beliefs.
In an interview with The Mail on Sunday, Fury spoke of homosexuality, abortion and paedophilia, and also alleged that Klitschko is a devil-worshipper who practises witchcraft, saying: "There are only three things that need to be accomplished before the devil comes home: one of them is homosexuality being legal in countries, one of them is abortion and the other one's paedophilia.
"Who would have thought in the 50s and 60s that those first two would be legalised?"
In the modern era in which high-profile fighters like Floyd Mayweather Jr and David Haye have often been criticised for distasteful comments, the reserved Klitschko is widely considered an ambassador for the sport and he made no secret of his disdain for Fury's latest rant by demanding that his challenger be punished.
"The last comments made me sick," he said from his training camp in Stanglwirt, Austria, ahead of the Sky Sports Box Office fight.
"It is disgusting. That is nothing to do with the promotion, it just shows what is inside Tyson Fury. I think he should just keep those comments for himself.
"When I hear those comments it shows that Tyson's brain is the size of a squirrel's, a walnut.
"We all live in a democratic world where everyone has the right to their own opinion. I think he has been punished for something he's said before.
"But if he is going to go over the edge then yes, he should be punished. Because if people know there is no punishment for their actions they will be motivated to continue."
Fury had also previously described Klitschko as a control freak, and the champion - having already insulted his challenger by insisting that he would have lost to David Haye, who caused him so much heartache in twice withdrawing from fights against him - this time agreed that he was largely right.
"I am a control freak," he said. "I am a person who likes control. If you're not in control you're not a true professional.
"I pay attention to little details because the small, tiny little details can make a big difference if they are together. He is right. I do like to be in control but I'm not a freak."
:: Klitschko v Fury is live on Sky Sports Box Office on Saturday 28 November. Buy now at skysports.com/klitschkofury