Gloomy Gus

Entry in progress—B.P.
 
Wiktionary: gloomy Gus
Noun
gloomy Gus (plural gloomy Guses)
1. (informal) A person with a sullen, unhappy appearance or demeanor; a person with a pessimistic outlook.
 
Wikipedia: Happy Hooligan
Happy Hooligan was a popular and influential early American comic strip, the first major strip by the already celebrated cartoonist Frederick Burr Opper. It debuted with a Sunday strip on March 11, 1900 in the William Randolph Hearst newspapers, and was one of the first popular comics with King Features Syndicate. The strip ran for three decades, ending on August 14, 1932.
 
Newspapers.com
20 April 1902, San Francisco (CA) Examiner, comic supplement, pg. 1:
Happy Hooligan Discovers His Long-Lost Brother, Gloomy Gus.