HK-58 Aurek
From Wookieepedia, the Star Wars wiki.
HK-58 Aurek was a HK-series assassin droid used by HK-47 in his attempts to take over the planet Mustafar. It was destroyed by a group of spacers who went on to defeat HK-47. Its appearance bears a noticeable resemblance to that of the Mon Calamari species.
