Robert Llewellyn (born 10 March 1956 in Northampton, Northamptonshire) is a British actor, comedian and writer best known as the mechanoid Kryten in the hit TV sci-fi sitcom Red Dwarf and as a presenter of the TV engineering gameshow Scrapheap Challenge. Llewellyn is a leading authority and recognisable figure worldwide for his knowledge and opinion on emerging transport and the future of energy in the renewable sector through his YouTube series Fully Charged.