Star Wars: Pandora's Legacy
A somewhat out-dated security droid, Kay-Four was reprogrammed for domestic tasks and limited first aid. Both roles are made more difficult by the fact that one of the droid’s arms is a blaster rifle.
Vilash and Dela’nah acquired their first ship-board droid, a K3-series model, early in their careers, but replaced it due to its propensity to reprogram itself (a side effect of slicer routines that had been installed on it). The K4 is far less resourceful, but also less distinct in personality.