Venetia Burney (Venetia Katherine Douglas Phair, July 11, 1918- April 30,2009) was the young girl who suggested the name Pluto for the planet discovered by Clyde W. Tombaugh in 1930. At the time, she was 11 years old and lived in Oxford, England. Pluto is the name for the Roman God of the Underworld. (See link for a full explanation.)
It depends how you're defining "cartoon".Technically the pictorial images of daily life done on cave walls by the first humans 40,000 years ago could be considered Cartoons.
Cartoons existedlong before film or TV. There's of course Egyptianhieroglyphsthat show various aspects of life.
There's a 5,200 year old earthen bowl found in Iran that shows a series of 5 images of a goat jumping into a tree.
See Provided Link for a more detailed History of Animation.
You'll have to be a little more specific on what your asking since the "Who" of your question cannot be answered. The individual that literally created the first cartoon has of course been lost to history.
The cartoon character 'Pluto' was created by both Norm Ferguson and Walt Disney .
Pluto was first created in 1930 by Walt Disney, and originally only appeared in around 24 Mickey Mouse short films until receiving his own series in 1937.
Pluto was created in 1930 and first appeared in The Chain Gang. He did not have a large role until 1934's Playful Pluto.
Walt Disney
Georges Méliès was the first person to make the first animated cartoon.
It was created in 1930 by Chic Young.
Cartoon Network Arabic was created in 2010.
The first animated TV cartoon series "Crusader Rabbit"was created by"Television Arts Productions" with Alexander Anderson and Jay Ward .
In 1917 the first feature length animated film, El Apostol was released created by Quirino Cristiani.
"Steamboat Willie" (1928) animated by the Disney Studios is the first fully synchronized cartoon .
Cartoon Network Cartoon Beach was created in 1999.
The first created was Plane Crazy but the first to premiere was Steamboat Willie.
Georges Méliès was the first person to make the first animated cartoon.
Cartoon Planet was created in 1995.
What-a-Cartoon was created on 1995-02-20.
Cartoon Saloon was created in 1999.
The Cartoon Museum was created in 2006.
The Diet - cartoon - was created in 1963.
The Candlemaker - cartoon - was created in 1957.
Cartoon Heroes was created in 1999.
Cartoon Pizza was created in 1988.