Scooby Doo originated in 1969 with the first series of many in "Scooby Doo, Where are you?", since then, there has been remake after remake and Scooby is still a huge character in American entertainment today. Scooby Doo is a paradox character. Hes a ghost-busting, crime-stopping, coward-dog. Scooby Doo never fails to have an extraordinary case of the munchies and his favorite food is Scooby Snacks. Scooby Doo is best friends with Shaggy Rodgers, who is also a munchies-crazed coward. Scooby and Shaggy are part of "The Gang" that involves Fred, Velma, Daphne, and yes, Scooby and Shaggy. The Gang rides around in The Mystery Machine and is always stumbling into the path of a monster, ghoul, or ghost, and they never fail to uncover the truth of the mystery and bust the bad guys.
Quotes From Characters

Villains:
"...and i would've gotten away with it too if it wasn't for you meddling kids!"
Shaggy:
"Like...Zoiks!!!"
Daphne:
"Would you do it for a Scooby Snack?"
Velma:
"Jinkies"
Scooby:
"Rooby Doobie Doo!"