The Electrical Personality Virus, or EPV, is a Valuxian virus.
This virus could infect electrical systems, causing them to gain personality. (Goodbye Mr Flips)
One example of the virus was contained in the Galactic Guidebook. It was released when Lucy needing more revision time, uploaded the virus onto her computer and sent it to school. However it also infected her computer and spread through the houses electrical systems. The first example would be the girls lights going on and off by themselves and giggling. Something identical occured in Josh's room. Then the Vaccum Cleaner gained a sarcastic personality with a dislike to dust.
It did however reach the school as Lucy's classroom printer refused to print the test paper however the projector began sparking.