Brainy Jane is an artificial female cricket made by Cricket using a cloning machine. Cricket created her by using his own brain in the machine.
Brainy Jane is rather rude about her smarts, as she called Cricket a "simpleton and a crybaby". She is good at getting on Cricket's nerves. However, she seems to have a bit of a blank and careless personality.
Brainy Jane looks exactly like Cricket. In addition to his looks, she has red lipstick and a shiny black beehive hairdo, along with purple mascara.