Who said "Raggy, I'm scared, but we can't let our friends down."?

This quote is attributed to Scooby-Doo.

Raggy, I'm scared, but we can't let our friends down. - Scooby-Doo

"Raggy, I'm scared, but we can't let our friends down."

Scooby-Doo Courage

"Scooby-Dooby-Doo, where are you?"

"Ruh-roh!"

"Like, zoinks!"

"Let's split up, gang!"

"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."