He didn't know how long it took, but he was finally here. The Skeld, a legendary space ship crafted by MIRA, one of earths top space centers, alongside NASA. Although they didn't understand why such a low civilization even attempted space travel, he had been taught not to ask questions, just listen and execute.
Usually executing is upon another being, but sometimes it's a command. Basically, his kind is taught to be robots, always listen and carry out orders, only the way to carry them out was limited to two ways: However you can, or murder. In this case, the instruction was murder itself, so that's the way to complete the mission. Of course, he'd never killed anyone, unlike his partner, who had actually committed mass murder on 5 ships before, but that didn't mean he couldn't kill, which led to right now, him, sitting in the launch protection chamber, or whatever it's official name was, he didn't remember.
He was told the earth had many languages, but the common one in MIRA was English, so he was required to be able to fluently speak it in order to go on the mission. Of course, he naturally had to adopt an identity, and since his kind didn't have genders, he had to pick which gender appealed to him. He had learned there was 2 main genders on earth, with the exception of gender identity, where as example one could be female but choose to be referred as neither male or female. Non binary is the term the humans came up with, and he was given that option as well to maximize success rate, but it didn't appeal to him, nor did the fact of not having a gender on a ship of humans. They would probably quickly suspect him when they heard he went by their they/them/it pronoun thing. They know his kind don't have genders. Instead, he picked the male gender, which he found to be quite nice, considering it fit his role, being on the reproduction side of his species, just as a male human was.
He had noticed his partner chose the female gender, and was currently making friendly chat with two other crewmates in Weapons, also female. She was building her alibi quite well. As for him, he didn't exactly know how to socialize with humans, so he just sat in Cafeteria running through many ways of being able to kill the crew. Stuffing there bodies in the vent, suffocation, launching into space, gun to the head, snapping their necks, heck he could even use his tongue from his second mouth to pierce through their head. It could pierce through the suit he had to unbearably wear, which was convenient. Being able to pierce it, that is. He looked around Cafeteria again. Man, he was excited, and nervous. In only about an hour or so, he would start his prowl.