A Nega-Drive, also known as Mind Negative Drive, was a unique aspect of programming in the Series 4000 mechanoids created by DivaDroid International, and an in-joke by a disgruntled mechanoid engineer. When Starbug came under attack by the laser cannons of the SS Centauri, Able took an escape pod and fired a green energy field at the Centauri. This energy field contained all the bad feeling built up in the nega-drive, which in turn infected the Simulant Trader.