Werner Wejp-Olsen saw his first gag cartoon published in Ekstra Bladet in 1955, when he was still in high school. He started making freelance gag cartoons worldwide under the pseudonym WOW. His first comic, the humorous adventure series 'Peter og Perle', appeared in Jyllands-Posten in 1966. WOW's second comic series was 'Felix', which he took over from Jan Lööf in 1972.
For Billedbladet, he launched the crime puzzle series 'Krimi-Quiz', which now appears worldwide under the title 'Dick Danger', from hiw own company Olsen Comcis. WOW's first daily gag-strip, 'Fridolin', started in 1974 in Berlingske Tidende. The artwork in this satirical series was inspired by artists like Mort Walker and Dik Browne.
This daily comic series was followed by several others: 'Granny and Slowpoke', 'Momsemor', 'The Tales of Hans Christian Andersen' and 'Trendz'. These series were published in Denmark and the US. Since 1989, WOW has lived in the USA.