Pulling this back to Traveller...
I think the 800-ton Mercenary Cruiser would be a nice fit for the Rasa. While visually smaller than what is shown in the show, and obviously the wrong shape. The Merc. Cruiser is just about the right size to be intimidating to most comercial vessels but not overpowering.
The Android could be the physcial manifestation of the Intellect Software program.
Add in Fire Control and Auto-Repair and the ship can almost do everything shown in the show. Add in some Expert programs for other skills like Astrogation etc. and you can almost perfectly duplicate the Rasa with a very small, non-technical crew.
Put them on the Rimward edge of the Spinward Marches or Trojan Reaches and replace the Galactic Authority with the Imperium and you have almost the same setting. MegaCorps are really running things, but if the GA gets involved it does so with a heavy hand.