Horatio Entwhistle has loved science since he was very young. In fact when he was five years old he blew up his bedroom for the first time. Now he has a shed in the back garden where he can practice his experiments…

Ming is one of Horatio’s closest friends. She has a judo black belt and her many talents include being a lock-picker extraordinaire. Her parents are very protective and this drives Ming crazy. She is sensible and often has to remind Horatio not…

Snowball is the neighbour’s cat. She first comes into the story when some of the chemicals in Horatio’s shed have turned her fur pink. For this reason Snowball doesn’t like Horatio very much. As the story continues Snowball becomes a more important…