Who said "The truth is worth standing up for."?

This quote is attributed to Pikachu.

The truth is worth standing up for. - Pikachu

"The truth is worth standing up for."

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."