Roary is a young and enthusiastic junior single-seater racing car. He is the main character in the show and he is always Big Chris' "number 1 star".
Roary is from Britain and he is inexperienced and he often makes mistakes. However, with the help of his friends, he always learns from them. In the speedy TV show, Roary wears a white baseball cap and with a number 1 emblazoned in a red star. Roary's catchphrase is "Light 'em up!". In South Korea, his name is KAKA. He is voiced by Maria Darling who actually voices Vee in Chuggington UK.