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"I don't believe in this team," Hareide told Danish daily Jyllands-Posten, a month ahead of their June 26 game in Russia.
"They are nothing special," he said.
"They don't have a leader such as Zinedine Zidane to lead them, someone who knew how to galvanise them," said the Norwegian who has been Denmark coach for three years.
"He played against Manchester City with his hair dyed blue and white, maybe he'll have it red and white to play us."
"Good grief, does he only think about his haircuts?" asked the coach.
Hareide said he hoped to lead Denmark on a fine campaign.
"I couldn't stand just being happy to be at the World Cup," he said.
Denmark beat Ireland 5-1 in a play-off to qualify for the finals where they have been drawn in Group C with Peru, Australia and the French.