Krazy Kat (also known as Krazy & Ignatz in some reprints and compilations) is an American newspaper comic strip, created by cartoonist George Herriman, which ran from 1913 to 1944. It first appeared in the New York Evening Journal, whose owner, William Randolph Hearst, was a major booster for the strip throughout its run. The characters had been introduced previously in a side strip with Herriman's earlier creation, The Dingbat Family, after earlier appearances in the Herriman comic strip Baron Bean. The phrase "Krazy Kat" originated there, said by the mouse by way of describing the cat.
https://en.wikipedia.org/wiki/Krazy_Kat