Page "Nancy Cartwright" Paragraph 16

Cartwright voices several other characters on the show, including Nelson Muntz, Ralph Wiggum, Todd Flanders, Kearney and Database.

She first voiced Nelson in the episode " Bart the General " ( season one, 1990 ).

The character was to be voiced by Dana Hill, but Hill missed the recording session and Cartwright was given the role.

She developed Nelson's voice on the spot and describes him as " a throat-ripper ".

Ralph Wiggum had originally been voiced by Jo Ann Harris, but Cartwright was assigned to voice the character in " Bart the Murderer " ( season three, 1991 ).

Todd Flanders, the only voice for which Cartwright used another source, is based on Sherman ( voiced by Walter Tetley ), the boy from Peabody's Improbable History, a series of shorts aired on The Rocky and Bullwinkle Show.