Daphne Blake is a core member of Mystery Inc. in the Scooby-Doo franchise, first appearing in the premiere episode "What a Night for a Knight" of Scooby-Doo, Where Are You!, which aired on September 13, 1969. Created by Joe Ruby and Ken Spears and designed by Iwao Takamoto for Hanna-Barbera Productions, she was introduced as the fashionable and enthusiastic teenage investigator alongside Fred Jones, Velma Dinkley, Shaggy Rogers, and Scooby-Doo. In the original series, Daphne frequently assumed the role of the damsel in distress, often being kidnapped or placed in perilous situations by villains, which earned her the enduring nickname "Danger-Prone Daphne." Her early portrayal emphasized her beauty, intuition, and eagerness to assist in solving mysteries involving disguised criminals.
Daphne is characteristically depicted with long red or auburn hair, fair skin, and a signature outfit consisting of a purple mini-dress, pink tights, purple shoes, and initially a green scarf, reflecting her stylish and affluent background. Her personality combines vanity regarding her appearance with genuine compassion and determination, often expressed through her catchphrase "Jeepers!" in moments of surprise. As part of a wealthy family from the fictional town of Coolsville, she contributes resourcefulness to the group, though her early iterations highlighted clumsiness in dangerous scenarios, contrasting with the intellectual Velma and leadership-oriented Fred.
Over the franchise's evolution, Daphne's character has developed significantly toward greater competence and independence. In the 1980s series such as The New Scooby-Doo Mysteries and The 13 Ghosts of Scooby-Doo, she emerged as a more skilled investigator. Direct-to-video films like Scooby-Doo on Zombie Island (1998) portrayed her as a professional television host, while What's New, Scooby-Doo? (2002–2006) showcased her athletic abilities in martial arts and surfing. Notable depth appeared in Scooby-Doo! Mystery Incorporated (2010–2013), exploring her romantic relationship with Fred and personal insecurities. Live-action adaptations, including those portrayed by Sarah Michelle Gellar in 2002 and 2004, further emphasized her martial prowess, marking a shift from the traditional damsel archetype to a capable action-oriented figure across various iterations.