Duala starred in 75 episodes of Blue's Clues across 6 series, in which all of them were adapted from the original American version of the show.
He was also a presenter on the "Prize Time", "Games Room" and "iPlay" strands on Challenge TV, and also presented Virtual World of Sport on The Computer Channel, Boiled Egg and Soldiers on Sky1 and the unit "Danger Detectors" in 1996 as part of BBC Schools programme Zig Zag.
[3] Duala more recently co-presented on the Travel Channel on the shows Thomas Cook TV and Around the World for Sky.
Previously, he started presenting Spanish and European interactive language programs for the BBC and many features for HOLIDAY and Holiday on a shoestring on BBC1, where he was the unofficial adventure sports expert presenting kayaking, bungee jumping, horse-riding, ice-skating, and mountain climbing for the show.
Duala presented a new daytime series called Let's Get a Good Thing Going that was aired on BBC One in December 2017.