After growing up in Germany, Klemens spent his formative years in such diverse places as North America, Southeast Asia and the UK, where he graduated with a First Class BA Honours in Media Performance from the University of Bedfordshire and went on to train in the Michael Chekhov Technique with Graham Dixon and Sarah Kane. He obtained a Diploma in Voice-Overs from the London Academy of Media, Film & TV and undertook further acting and voice training with the renowned coaches Dave Fennoy, Dian Perry, Yvonne Morley and Stephane Cornicard. In addition, he received presenter training with the TV Training Academy at Pinewood Studios.
As a screen presenter, Klemens has worked on TV commercials (for SelectSpecs Germany) and online/corporate videos (for a wide range of clients such as Hewlett-Packard and Deb Group). Moreover, he has been the live presenter of events at prestigious venues including the BFI Southbank, the Royal Academy of Arts and Standpoint Gallery.
His recent acting roles include the radio host Poe in the critically acclaimed full-motion video game 'The Shapeshifting Detective' and the episode lead of Gottlob Bidermann in the TV docudrama series 'Nazi Megastructures: Russia's War' on National Geographic Channel. Both productions enabled Klemens to combine his skills as a screen actor and voice actor as he had a mix of live-action and voiceover scenes in both roles.
His other key screen acting roles include the lead character of the German Pilot in 'Dying Light' (which was the opening film of the 2017 Cardiff International Film Festival, where it was nominated for "Best Welsh Short Film"), the character of Chief Pathologist Dr Wild in the feature film 'Molly Crows' (which was awarded "Best Drama" at the 2013 Portobello Film Festival), and the character of Tybalt in the music video 'Babyfoot Romance' (which won "Best Music Video" at the 2015 Limelight Film Awards).
In addition to his extensive voice work in video games (which also includes the second, third and fourth instalments of the award-winning and UK-chart-topping ‘Sniper Elite’ franchise) and documentaries (which also includes TV series for such channels as Discovery and History), Klemens has voiced a wide range of other high-profile productions including TV & online commercials (for regular clients such as Duracell, Skechers, PokerStars, Dell, Cartoon Network, Disney, Nickelodeon, MTV) and audio guides (for such iconic attractions as St. Paul's Cathedral and the Guinness Storehouse).
On stage, Klemens has played such varied roles as Paris in 'Romeo and Juliet' at The Windsor Globe, Banquo in 'Macbeth' at The London Theatre and Pasha Selim in the Mozart opera 'Die Entführung aus dem Serail' at West Green House Opera.