Ugly assassin droid

A former classmate of Raith Sienar was involved in the project to construct these assassin droids. However, they were a failure on two accounts: they were obvious in their nature, and they were prone to going completely berzerk. The one Sienar kept in his underground museum had killed his former classmate from Rigovian Technical University, a reminder of not to overstep one's competence.

Behind the Scenes
There was no official name for this assassin droid. The only clue as to it's title follows in this excerpt from Rogue Planet:

A small cubicle between two larger exhibits held a rather ugly assassin droid, with a long cylindrical head and rudimentary thorax.

For the purpose of naming this unique droid, it has been dubbed the "ugly" assassin droid.