Donald Davenport is a father figure for the Lab Rats and Leo, his step-son, he is married to Leo's biological mother Tasha and is a billionare inventor. His many inventions often backfire such as his high speed train which went out of control after the conducter dropped a smoothie on the controls, as shown on the episode "Rats on a Train" He is the one who made Chase, Adam, and Bree bionic. He also invented a smart home system called "Edy." His thoughts on the Lab Rats were previously of them being just science projects but at the end of the first episode he realizes they are also teenagers and need to be treated like it. He owns the home, a mansion, which has many things from a game room to a playable 3-D TV system.