The role of each character was strongly defined in the series: Fred is the leader and the determined detective, Velma is the intelligent analyst, Daphne is danger-prone, Shaggy is a coward more motivated by hunger than any desire to solve mysteries, and Scooby is similar to Shaggy, save for a Bob Hope-inspired tendency towards temporary bravery. Later versions of the show made slight changes to the characters' established roles, such as showing the Daphne in 1990s and 2000s "Scooby-Doo" productions as knowing many forms of karate and having the ability to defend herself, and reducing her tendency towards being kidnapped.