Who said "I believe in you—now you gotta believe in yourself!"?

This quote is attributed to Donkey Kong.

I believe in you—now you gotta believe in yourself! - Donkey Kong

"I believe in you—now you gotta believe in yourself!"

Donkey Kong Motivation

"Tie your shoes!"

"I'm so excited I could burst!"

"Let's-a-go!"

"You're my best friend!"

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."