Everyone leaned in on the table, all at once. I took the cue and the Dyson and sun vanished from the holotank, and was replaced by their first look at a Zulm. They were moderately humanoid, standing about five feet tall. It had no legs and feet, instead, they had rubber like treads to carry them around. The smooth floors of the Dyson didn't require the intricate steps that legs and feet required, and were abandoned to the treads. I put the thing into animation so they could see it move, and it scurried around the tank like a tiny remote controlled car.
The torso was what gave them humanoid appearance. They had bio-arms much like we do, but they also has a utility mecharm which attached to the right side of their 'chests.' These were interchangeable, depending on the duties they had to perform. Their heads were ovoid, and completed the humanoid look. But the interior of their skulls was a mix of cybernetic junctions and biological synapses. Their eyes never blinked. They didn't need to. The eyes which at one time probably were similar to ours were now sensors, and their eyes were large, dark and round. Like a fly, they were faceted in a honeycomb structure that gave them the ability to see in a few directions at once.
all be it this guy looks a bit more like on of the crew mascerating as a zulm :)
Heres the Description from the story Everyone leaned in on the table, all at once. I took the cue