Debi Derryberry. Actress: Jimmy Neutron: Boy Genius. Debi Derryberry, is best known for voicing Jimmy Neutron in the Academy Award-nominated film Jimmy Neutron-Boy Genius. She also stars in Adult Swim's Tigtone as the voice of Helpy. In Netflix's Emmy Nominated F is For Family Debi voices Maureen, Philip, Bridget, Scott, Beatrice the Nurse and Kenny. Other voice-over work includes Draculaura in Monster High and work in Toy Story, Curious George...