Eddie Jones says his players could face the "angel or the devil" when he begins his reign as England head coach.
The Australian, 55, succeeds Stuart Lancaster after England's poor show at the World Cup and starts in December.
In his first news conference, it was claimed he was called the 'devil' for how hard he worked former team Japan.
Jones said: "Every side is different. You can be a devil one day and an angel the next day. We don't know what I'm going to be."
Following his four-year appointment as England's first foreign coach, Jones said there was "extreme talent" in the squad despite the team's worst performance at a World Cup.
He added that he wanted his team to make Twickenham "buzz" again by tapping into a "bulldog spirit" to take on the world's best sides.
"One thing you have to do is create your own unique style of play," the former Australia coach said.
"We won't be copying the All Blacks. We will make our own style and I want the players to believe that 100%.
"We want the All Blacks to be watching how England play. That would be nice, wouldn't it?"