That would depend a great deal on how you define a 'cartoon character.'
In 1995 the US issued Scott #3000, a sheet of 20 stamps commemorating a dozen of the early American Cartoons, some of which are still running in newspapers today.
The first cartoon character is arguably the one issued in 1984 that pictured McGruff, the crime dog. Bugs Bunny was the first animated cartoon character to appear on a US postage stamp in 1997.
Probably Mickey Mouse. Walt Disney was honored on a commemorative stamp not long after his death. it should be noted the other cartoon mills such as Warner have had there day at the post office also- Bugs Bunny stamps were out a few years ago.There are no problems in making stamps on still-extant cartoons, unlike honoring living individuals which is politically taboo. Disney cartoon characters have been featured on foreign stamps, also. I am not so sure about Warner Bros (Bugs).
Mickey mouse
He became the first cartoon character to star in a fully synchronized animated cartoon.
Allen from Allen GregoryLil' Abner
Charles Moulton, a psychologist. Invented the character Wonder Woman one of the first superheroine characters.
Popeye is a cartoon fictional character which was created by Elzie Crisler Segar. The character made his first public appearance in 1929 at the Thimble Theatre.
It is believed that Dr. Syntax was the first doctor in cartoons. It is believed that this character was created around 1809 after a man named Thomas Rowlandson.
That would depend a great deal on how you define a 'cartoon character.' In 1995 the US issued Scott #3000, a sheet of 20 stamps commemorating a dozen of the early American Cartoons, some of which are still running in newspapers today. The first cartoon character is arguably the one issued in 1984 that pictured McGruff, the crime dog. Bugs Bunny was the first animated cartoon character to appear on a US postage stamp in 1997.
In 1997 Bugs Bunny was the first cartoon character to appear on a USPS stamp .
1926
Luis and Clark
'The Yellow Kid' in 1895 from the cartoon strip Hogan's Alley .
Ethel barrymore , 1982
Ethel barrymore , 1982
bugs bunny or Tom and Jerry
Spongebob Squarepants is one such character
It was created in 1930 by Chic Young.
He became the first cartoon character to star in a fully synchronized animated cartoon.
SpongeBob is an animated character that appears on the cartoon, SpongeBob SquarePants. The cartoon first premiered on May 1, 1999.