TX-1138 aka, "Tex", was an experimental reconnaissance droid developed by the Alliance Intelligence Command. The basic design was a resurrection of the Separatist B2 battle droid, however the central processor had been completely upgraded. TEX was programmed with a library of information, including Star and Planetary maps. As well as blueprints, schematics and readouts for every known Imperial; ship, fighter and ground vehicle. He was also programmed to know all Imperial protocol and decipher Imperial codes. He didn't have much of a personality, he was built to obey orders and relay information he did not feel emotions, or understand figurative language. This was problematic, as he had the tendency to carry out orders to its most literal extent.
I wasn't sure how it would turn out, well I'm still not sure about it. I imagine his voice being similar to a 2-1B surgical droid, deep, no accent, monotone. I just have one more figure to build to complete the squad. He'll be pretty cool, I may take my time, I'd like to get it right.