Some Among Us thoughts/headcanons: The in-universe reason the crew knows whether or not the person they ejected was an

Some Among Us thoughts/headcanons:

• The in-universe reason the crew knows whether or not the person they ejected was an imposter is because people tend to get… messy in the vacuum of space. This includes imposters, who can’t hold onto a form once out of the airlock. Even watching out the window, it’s kind of noticeable that tentacles kind of squish out of the suit.
• On a similar note: the imposters are indeed shapeshifters. They can and do take off the suits when need be, and it is not as easy as that to tell them apart. If you already knew they weren’t human you might notice there is something weird about how they step, a slight accent you can’t place, but nothing that couldn’t be human. There is a reason crews resort to execution when they get suspicious.
• This whole thing has been going on for a while. Human ships are regularly following a route to a near-ish (uninhabited) planet to try and terraform it. Not every ship has imposters on board, but enough of a minority do that there is a reason the humans have protocols for it.
• Imposters aren’t hunting or eating humans. Instead, its a more Earth-bound conspiracy. Don’t get me wrong, the imposters are definitely still aliens. They’ve just been hired by humans.
• Specifically, a rival company. Everything all boils down to money. Another human company is trying to pave the way to selling their own spaceships and routes, and are trying to break down the current monopoly by making the existing ones seem unsafe. It was supposed to be seen as technological failure, but they weren’t expecting one of the early attacked ships to survive and announce they had been attacked by aliens.
• The imposters are not really individual mercenaries. It’s more that their nation has been hired, so each time an imposter gets on a ship, it is because they have individually been given a mission from their duty.
• One day a particular ship will discover that the imposters were hired, and that the company that hired them is intending to double cross the actually-very-small nation of mercenaries and have the imposter planet annihilated by vengeful humans, leaving the company declared as heroes with no-one ever knowing about the thousands of lives thrown away. This ship, imposters and humans alike, will then quietly make an alliance together and start working to warn both sides. But thats a story that won’t happen for years.
• Imposters actually are given task lists, because it would be very suspicious if they weren’t. They cannot physically complete most of them, though, because they are not great at distinguishing colours. And besides, they don’t want to help.
• Imposters are also given official rosters. They are on board before the ship leaves Earth, and the humans who hired them have faked their identifications.
• Generally speaking, imposters are not necessarily that tough. Their transformations always takes a couple of seconds (which is very long if someone is attacking and you are trying to be able to fight back) and although they are pretty strong for the first swipe, their stamina is awful, even in human form. This is why they tend to sneak up behind crewmates - in an actual chance to fight that the crewmate can get over their surprise, the odds start to sway to the human. Its not a guarantee, obviously, and depends on their skills and luck, but there is a reason imposters go for the one sharp attack.
• There are other ways to successfully kill an imposter other than throwing them out the airlock. However, the airlock was discovered when an imposter simply got up from being stabbed with their own knife. The human crewmates reacted by going straight to overkill, and it worked. So that became policy.
• The vents thing is directly tied into the shapeshifting thing. Specifically, the vents are not big enough for a human to fit. Getting through them involves shifting slightly. They tend to reform as they come out the end, but that still means someone can see you with your legs in a vent that should not fit.
• Imposters cannot swim. This would be a very useful way to tell them apart from humans, but nobody actually knows about this weakness. Not many pools on the ship.