Exoskeleton (Lab Rats)

The Exoskeleton is one of Donald Davenport's inventions. It first went out of control when Chase reprogrammed it to mess with Leo after getting booted out of his roll and position on Davenport's "The Call" meeting, leading to an argument. However, the brothers were able to work out their differences and take it down. Leo later used it to get free pizza. 
It later returned in Binoic Showdown, where it broke into the lair of Davenport's brother, Douglas. It later shot at Marcus, a bionic supervillain, but was pushed by Marcus' own abilities. 
It makes an apearance in the season 4 episode "Simulation Manipulation" as part of an evaluation exercise in the Davenport Bionic Academy. Leo reprogrammed itt o work as the housekeeper of the Mentor Quarters and to act like his and Bree's personal butler.