High Quality Content by WIKIPEDIA articles! Underground Ernie is a Computer-animated children`s television series produced by Joella Productions in the UK and shown by the BBC on both CBeebies and BBC Two. It is set in International Station, a fictional worldwide underground network, and focuses on the everyday adventures of Ernie, a friendly Underground supervisor, Millie, his multilingual colleague and Mr Rails the lovable maintenance man. The trains under Ernie`s watchful eye all have characters of their own. There`s Bakerloo, Victoria, Circle, Jubilee and the twins, Hammersmith & City. From time to time they are joined by their friends from across the world including; Paris, Brooklyn, Moscow, Sydney and Osaka.