[4] Kremer counted Alex Raymond's Flash Gordon and Hal Foster's Prince Valiant among his influences.
Harvey editor Sid Jacobson was frustrated by the poor design of most comics at the time.
Kremer created or defined many of the most well known Harvey characters, including Casper the Ghost, Hot Stuff, Joe Palooka, Little Audrey, Little Max, Richie Rich, and Stumbo the Giant.
Kremer also excelled at realistic treatments, producing top-quality work for Harvey's romance, war, and horror genre titles.
Kremer was married to wife Grace, with whom he had two sons, Richard W. and Peter R., and two daughters, Maryanne Kremer-Ames and Suzanne Petrozzino.