Michaela Dietz (born November 1, 1982) is an American voice actress whose professional career started in 2005. She voiced the character of Riff on the PBS children's television series Barney & Friends, Amethyst on the Cartoon Network television series Steven Universe and Steven Universe Future, Dolly Dalmatian on Disney Channel's 101 Dalmatian Street, Pita in Fallout 76, Vee on Disney Channel's The Owl House, and Darryl McGee on Disney Channel's The Ghost and Molly McGee.