Draco is, indeed, a dragon; but he's not scary at all. In the enthusiastic style of him, he learns in each chapter a pair of opposite words, for example: open-closed, high-low and more.
An Australian Pet-magazine style Children's series hosted by Nick Hardcastle and later Adam Saunders, both of whom would have Modigliana from The Ferals as their puppet cohost.
Ludus, an intergalactic space villain, has captured three children and each of two of their relatives. The children cooperate to complete a series of electronic challenges to earn their release and return to Earth.