T.S. Allen was an American cartoonist born in Fayette County, Kentucky, around 1870. He attended the James Kane Allen's school and graduated in classical languages from the Transylvania University in Lexington. In the 1890s, he moved to New York to work as a clerc in his father's law office. Around same time, he started moonlighting as an author and joke writer for magazine cartoonists, and eventually also took on drawing.
Allen initially worked mainly as single-panel cartoonist, but later on, he also did more sequential work, like his 'Just Kids' feature, which ran from 1898 until at least 1905. Allen's work appeared in the World and Hearst sections, and in Life magazine.