Grandpa Is a Secret Supervillain : Old Habits Die Hard (and Explode)

A retired supervillain. A washed-up hero. And a grandson who just wanted a quiet Tuesday.When twelve-year-old Shaun discovers that his forgetful, cardigan-wearing Grandpa Joe was secretly the world-renowned Doctor Disaster, his life takes a sharp turn into the absurd.Grandpa's secret underground lair is waking up, and the city of Maplewood is under siege by rogue breakfast appliances and jetpack-w...