Kate Micucci ( mih-KOO-chee; born March 31, 1980) is an American actress, comedian and musician who is half of the musical comedy duo Garfunkel and Oates with Riki Lindhome. Some of her roles include Stephanie Gooch in Scrubs, Ally in 'Til Death, Shelley in Raising Hope, Lucy in The Big Bang Theory, Sadie Miller in Steven Universe, Velma Dinkley in Scooby-Doo since 2015, Webby Vanderquack in DuckTales, Daisy in Nature Cat, Julie in Motorcity, Stacey in Guillermo del Toro's Cabinet of Curiosities, and Dr. Fox in Unikitty! (Via Wikipedia)