Who said "Justice means standing up for what's right."?

This quote is attributed to Pikachu.

Justice means standing up for what's right. - Pikachu

"Justice means standing up for what's right."

Pikachu Justice

"Pika pika!"

"Pikachu!"

"Pika pika chu!"

"I choose you!"

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."