Amir Khan branded Michael Gomez an "idiot" after the Manchester boxer skipped a pre-fight news conference.
Khan, who defends his Commonwealth lightweight title against Gomez on Saturday in Birmingham, also claimed his opponent is running scared.
"He's scared, I was looking forward to seeing him and he's not turned up but his games don't bother me," said Khan.
"You know what an idiot Michael Gomez can be, I'll let my fists do the talking on Saturday night."
The fight, a 10,000 sell-out at the National Indoor Arena, promises to be an explosive affair.
And Khan's temporary trainer Dean Powell has warned his man not to get involved in a brawl with Gomez, a former British super-featherweight champion.
Powell said: "Gomez is going to bring a special kind of intensity to the fight. We all know how Michael Gomez likes to fight and we are fully prepared for what he's going to bring.
"Amir certainly doesn't need to get involved in World War Three with Gomez. But Gomez is going to have a big shock if he thinks he can shove Amir around the way he shoved Alex Arthur around."
Gomez says victory over Khan will be the latest extraordinary chapter in his colourful life, in and out of the ring.
"People have been saying I'm finished for the last 10 years," said the 30-year-old.
"But a big fight like this is what I need, I will shock everybody. I fought Alex Arthur (in 2003), who was an unbeaten prospect, and destroyed him."
Gomez, who has eight losses from 43 fights, has a film about his turbulent life coming out in November.
There is nothing more you can ask for than the chance to prove the whole world wrong
Michael Gomez
As well as his surprise fifth-round stoppage of Edinburgh's Arthur and other boxing successes, the biopic will tell of his battles outside of the ring, including facing a murder charge and being stabbed and declared clinically dead.
And while many in the boxing fraternity have written him off after recent defeats to Carl Johanneson and Peter McDonagh, Gomez believes his life story will seem even more outlandish after Saturday night.
"This fight really is my last chance to set myself up for life and become known in every household in Britain," said Gomez, who is 31 on the day of the bout.
"I used to go into fights not really bothered and thinking about partying afterwards.
"If this fight was a routine fight I'd probably lose. But a big fight like this is what I need and I will shock everybody.
"It's all down to frame of mind. There is nothing more you can ask for than the chance to prove the whole world wrong."
The fight will be Khan's first working with trainer Powell following the former Olympic silver medallist's split with Oliver Harrison last month.
The 21-year-old is unbeaten in 17 professional fights and he believes Gomez will pose new challenges.
"Gomez will walk forward into my punches and I expect it to be an explosive fight," he said.
"If he starts mouthing off and getting into my face it will be part of the experience for me.
"To be honest, I think I'm above this domestic level now but each fight is bringing something different.
"There is no way Gomez is going to be as fit as me so I expect a spectacular stoppage."
The undercard will feature Bradley Pryce's sixth defence of his Commonwealth light-middleweight title against West Bromwich's Marcus Portman.
Khan, who defends his Commonwealth lightweight title against Gomez on Saturday in Birmingham, also claimed his opponent is running scared.
"He's scared, I was looking forward to seeing him and he's not turned up but his games don't bother me," said Khan.
"You know what an idiot Michael Gomez can be, I'll let my fists do the talking on Saturday night."
The fight, a 10,000 sell-out at the National Indoor Arena, promises to be an explosive affair.
And Khan's temporary trainer Dean Powell has warned his man not to get involved in a brawl with Gomez, a former British super-featherweight champion.
Powell said: "Gomez is going to bring a special kind of intensity to the fight. We all know how Michael Gomez likes to fight and we are fully prepared for what he's going to bring.
"Amir certainly doesn't need to get involved in World War Three with Gomez. But Gomez is going to have a big shock if he thinks he can shove Amir around the way he shoved Alex Arthur around."
Gomez says victory over Khan will be the latest extraordinary chapter in his colourful life, in and out of the ring.
"People have been saying I'm finished for the last 10 years," said the 30-year-old.
"But a big fight like this is what I need, I will shock everybody. I fought Alex Arthur (in 2003), who was an unbeaten prospect, and destroyed him."
Gomez, who has eight losses from 43 fights, has a film about his turbulent life coming out in November.
There is nothing more you can ask for than the chance to prove the whole world wrong
Michael Gomez
As well as his surprise fifth-round stoppage of Edinburgh's Arthur and other boxing successes, the biopic will tell of his battles outside of the ring, including facing a murder charge and being stabbed and declared clinically dead.
And while many in the boxing fraternity have written him off after recent defeats to Carl Johanneson and Peter McDonagh, Gomez believes his life story will seem even more outlandish after Saturday night.
"This fight really is my last chance to set myself up for life and become known in every household in Britain," said Gomez, who is 31 on the day of the bout.
"I used to go into fights not really bothered and thinking about partying afterwards.
"If this fight was a routine fight I'd probably lose. But a big fight like this is what I need and I will shock everybody.
"It's all down to frame of mind. There is nothing more you can ask for than the chance to prove the whole world wrong."
The fight will be Khan's first working with trainer Powell following the former Olympic silver medallist's split with Oliver Harrison last month.
The 21-year-old is unbeaten in 17 professional fights and he believes Gomez will pose new challenges.
"Gomez will walk forward into my punches and I expect it to be an explosive fight," he said.
"If he starts mouthing off and getting into my face it will be part of the experience for me.
"To be honest, I think I'm above this domestic level now but each fight is bringing something different.
"There is no way Gomez is going to be as fit as me so I expect a spectacular stoppage."
The undercard will feature Bradley Pryce's sixth defence of his Commonwealth light-middleweight title against West Bromwich's Marcus Portman.