Oto Reisinger was a Croatian cartoonist, and a graduate in Architecture. He had his first work published in Šilo in 1942, and then in Studentski List at the age of 18. He was a regular contributor to Kerempuh weekly humor magazine between 1946 and 1950. His work has also appeared in many foreign magazines, including Quick in Germany, Panorama from The Netherlands, Nebelplater in Switzerland and the UK magazine Punch.
His cartoons caused a protest from Soviet president Krushchev, because they poked fun at Stalinism. Reisinger alos achieved great popularity with the comic 'Štefekove pustolovine' that ran in Plavi Vjesnik between 1964 and 1966. Reisinger died in Zagreb on 6 April 2016 at the age of 89. During his lifetime, he has produced over 70.000 cartoons.