Utility droids of all makes and models are a common sight on every planet throughout the galaxy. The versatility of these handy little droids, combined with their reliable programming and affordability, has made them popular for everything from light janitorial duties to complex mechanical repairs and maintenance. Among the premier utility droids currently available are those in the T3 series. Though more expensive than most standard models, T3 droids contain the latest in advanced circuitry and programming, and are easily fitted with a variety of customized upgrades.
T3-M4, a prototype of the latest model in this prestigious line, was created in a droid shop on Taris to serve as a personal security unit for an anonymous buyer. Along with the standard functionality, T3-M4 was equipped with light armor plating and upgradeable weapon functionality. These combat capabilities, combined with the droid's innate computer slicing and code breaking skills, have led many to speculate about the identity of the droid's unknown buyer. Given the expense, abilities and advanced technology of this little droid, most suspect that T3-M4 is being fitted for something far more than a simple personal security position.
