Scooby Doo is a cartoon produced by Cartoon Network, it is about a talking dog named Scooby Doo that with the help of his 4 human friends (Shaggy, Freddy, Velma and Daphne) solve mysteries, they discover who is behind the monsters that scare people. Even though Scooby is always the one who catches the guilty, he is always scared of everything that happens while they are solving the mystery.
Gravity Falls is a new tv show (cartoon) produced by Disney Channel about a brother and a sister who live with their aunt that try to find mysteries, the opposite of Scooby Doo, they are always wanting to find mysteries, they search mysteries while Scooby Doo's mysteries get to them without an advice.