Fred Hendriok was an important commercial artist and illustrator.

After training as an artist and working briefly as a painter, Fred Hendriok was drafted into the imperial army at the beginning of the First World War. According to his abilities he was used for the field press. He was to design the soldiers' newspaper with journalistic articles and illustrations.

After the end of the war, Hendriok worked in Hamburg as a freelance graphic artist. He was a member of various artist groups, including the Hamburg Secession from the year it was founded in 1919. In 1920, after a major internal dispute with 13 other members, he resigned and joined the Hamburg Artists' Association. From 1918 he was married to the clerk Paula Dora Toni Hutzfeld. He was also a member of the Hamburg Masonic Lodge Ferdinande Caroline.

In the 1920s and 1930s, Hendriok was very successful as a commercial artist. Leading companies had their advertising logos and product packaging designed by Hendriok (e.g. Beiersdorf AG, Camel (cigarette brand), Hamburgische Electricitäts-Werke). The label for Kühne mustard goes back to the design by Hendriok, with only slight changes.

His reputation as a commercial artist also got him commissions as a wall designer. Among other things, he painted several walls of a café in 1937.

Another field of activity was illustrations and texts for Hamburg newspapers.

Although already in his fifties, Hendriok also had to join the Wehrmacht in World War II.