Who said "Fear is just a challenge in disguise."?

This quote is attributed to Pikachu.

Fear is just a challenge in disguise. - Pikachu

"Fear is just a challenge in disguise."

Pikachu Fear

"Pika pika!"

"Pikachu!"

"Pika pika chu!"

"I choose you!"

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."