Iron Beast "Alex"

The lack of legs isn't actually a bad thing for... Him? Her? It's hard to tell with the fact they don't say anything. They are referred to by the others as Alex, which doesn't help identify gender due to the name being for both boys and girls. They are mainly on the first and second floors of the main building. Due to their size and highly flexible body, they can travel through the ventilation systems to get places faster. Also, they're fully organic despite looking like a machine. They don't crawl around (unless in the vents) like most would think, they actually treat their arms as both arms and legs, kinda like a monkey or ape. 5'7.