Professor Ludwig Von Drake is one of Walt Disney's cartoon and comic book characters. He was first introduced on September 24, 1961, as the presenter (and singer of "The Spectrum Song") in the cartoon An Adventure in Color, part of the first episode of Walt Disney's Wonderful World of Color on NBC. Said to be an uncle of Donald Duck, he was supposedly named after either Ludwig von Mises or Ludwig van Beethoven. He is described as a scientist, lecturer, psychologist, and world traveler. The character displayed his "expert" knowledge on a variety of subjects in eighteen episodes of the classic anthology series, as well as on a number of Disneyland Records.
Paul Frees was the original voice of Ludwig Von Drake. After Frees' death in 1986, Walker Edmiston voiced the role.
Ludwig Von Drake comes from Vienna, Austria and has a fascination with knowledge. Since his youth he has been trying to obtain as many diplomas, in any science, as possible. When he is consulted by other family members, it is a running gag that he almost invariably turns out to have a university degree relevant for whatever information they are seeking. He is often shown as having little social competence, however, and is often portrayed as being very forgetful, sometimes even somewhat senile. In the comics Ludwig usually visits with Donald Duck and Donald's nephews Huey, Dewey and Louie. On occasion, Daisy Duck would coax (or even trick) the professor into giving lectures and tours for her ladies' club. Sometimes Ludwig and Gyro Gearloose have competed as to who is the greater inventor.