Who said "I've never backed down from a challenge."?

This quote is attributed to Bowser.

I've never backed down from a challenge. - Bowser

"I've never backed down from a challenge."

Bowser Courage

"I'm not just some bad guy - I'm the king of the Koopas!"

"You think you can stop me? I have an entire army!"

"I didn't come this far to lose now."

"Fear me, for I am unstoppable!"

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."