Navi was created by Nikolai Blecker as his aide as well as taking care of guests on the train, in the past she also helped find the members of Blecker’s ill-fated team, a group of overbearing and over emotional humans, also know as TEENAGERS! Navi is one of several androids built by the Rainbow Line Central Station and includes other 'sister' models such as Wagon of the ToQgers main line.
When Nico infected with the Gekitosu Robots and Catgirl Virus one of the first people she infests in Navi, while her personality doesn't change much she becomes loyal to Nico’s pack and the desire to grow it.
After Blecker’s return from Equestria to see the state Navi is in he builds her a new body and transfers her files while also making shew she doesn't remain bound to the bestial urges, essentially rebooting Navi’s body.
Navi is a ditz, there is no way around it she's more interested in making freinds and cleaning the trains then thinking and that was before she was infected by Nico and became a feral cat girl.
Name: Navi Poppin
Age: 16
Birthday: [Redacted], 2000
Gender: Female