Crystal Scales: Crystal Scales. Actress: Jimmy Neutron: Boy Genius. Crystal Scales is an African-American actress, rapper and singer who is mostly known for voicing Libby Folfax from the Jimmy Neutron: Boy Genius franchise by Nickelodeon. She also voiced in other animated works and video games such as Titan A.E., Batman: Gotham Knight, Psychonauts, Scooby-Doo, The Boondocks, Class of 3000 and Tutenstein.
Known For: Jimmy Neutron: Boy Genius (Libby(voice)), Titan A.E. (Drifter Girl(voice)), The Adventures of Jimmy Neutron, Boy Genius (Libby FallfaxLibbyLibby FolfaxIkeMaggieMrs. Folfax(voice)), Static Shock (Daisy WatkinsCoed #1(voice))