Just the thought of Scooby-Doo is enough to get the theme song stuck in our heads.

A list without Scooby-Doo? As he himself would say, ruh-roh.

Scooby-Doo, along with his human friends Fred, Daphne, Velma, and Shaggy, has been around in some capacity since the ’60s, starting with the original “Scooby-Doo, Where Are You!” cartoon, which lasted for just two seasons.

The characters have since been featured in multiple spin-off series, direct-to-video movies, video games, live-action films, and, of course, in lunch boxes around the world thanks to Scooby Snacks.

The impact of Mystery Inc. can still be felt today, with multiple phrases making it into our vocabulary today, like zoinks, jinkies, and everyone’s favorite phrase to depict annoying children, “meddling kids.”