Throughout the various Mortal Kombat games he was involved in, Sektor has grown into an ever more menacing mechanized warrior. He represents the closest thing to evil a cyborg can be, and combines traits of both a stealthy ninja and a ruthless killing machine fit for modern warfare. In contrast to his counterpart Cyrax, Sektor never bothered to rediscover his human side, and may be unable to. As far as this could be said about a cyborg, it is likely that he suffers from a form of insanity. He is capable of independent thought and action like Cyrax and Smoke; however, unlike the other two cyborgs, the only emotion Sektor really displays is anger.
Art concept sketch of Sektor from MK3 and MK Trilogy As with his fellow Lin Kuei test subjects, Sektor is a cyborg ninja adorned in red armor plating. After the events of Deadly Alliance, Sektor gave himself a technological upgrade to further his conquest as leader of the cyborg ninja army, the Tekunin.
The redesign changes all except his helmet completely, resembling a battle robot more than a ninja. In the newest Mortal Kombat, Sektor is given an entirely new design with a distinct manga-esque inspired style. The only thing kept from the original is the topside of his helmet featuring loose wires. An alternate costume also features him for the very first time in human form, appearing as an Asian warrior wearing a red and black gi. Unlike his reluctant partner Cyrax, he embraces technological advances, utilizing a jetpack and hidden conventional weaponry.