Kassi Ngoubeyou Olivier, also known as Kangol, was born in Mbalmayo, Cameroon in 1980. He has been fascinated by comics since early childhood, especially by 'Tintin' and American comics. He studied at the Institut de Formation Artistique (IFA) in Mbalmayo and made his debut in comics through the group Mac BD. He has participated in several comic festivals in Douala and Kinshasa. Besides making comics, Olivier Kassi also works in advertising and infographics. He drew the comics 'Moukouaye', 'Sirène', 'Au nom d' Adam' ad others.