Jokaero
The Jokaero are an ape-like race created by the Old ones a long time ago. It is questionable if they are a truly intelligent race despite being technologically advanced, because they don't possess a language, culture or any greater motivation than bare survival.
It is speculated their understanding about technology is coded into their genes, much like Ork Oddboyz (Mekboyz, Painboyz etc.)
They are the creators of the digital weapons which some other factions, mainly high-up Imperials use.