Klitschko was hoping to fight Britain's David Haye, but instead has to defend his title against another former cruiserweight champion who is the mandatory challenger.
"I am ready. I am confident," Klitschko said Monday at a joint news conference with Gomez. "I had no injuries in training camp, thank God, and I am 100 percent ready. I heard a lot of statement from Gomez's camp recently and all I can say is that they can dream on, they are alldreams.
"He says he has had the hardest training camp of his career and I can promise him the hardest fight of his life. I think he is a very good boxer, with technical skill, and he showed it all in the cruiserweight. But heavyweight is something else. I will show him. It will be a lesson, but it won't last long."
Gomez, a 35-year-old Cuban defector who lives in Germany, did not seemimpressed.
"I will beat his face in. I am the better boxer," Gomez said. "I will beat him, that'sit."
During the pre-fight hype, Gomez has also vowed to "destroy" Klitschko.
