The primary goal of a Crewmate is to complete all tasks without being killed by An Impostor, with the secondary goal of finding all Impostors and ejecting them off the map. Crewmates who have been killed by An Impostor or ejected become ghosts.
There are two ways for Crewmates to win:
- All Crewmates complete all their tasks.
- All Impostors are eliminated from the game.
A Crewmate can use the report ability to report a dead body and bring the entire Crew and all Impostors into an emergency meeting to discuss who The Impostor may be. Impostors also have this ability. The report button appears above the use button.
A Crewmate can use for a variety of interactions. The most common interaction is to activate and complete tasks. Crewmates can also use the emergency button to call an emergency meeting manually when possible. Impostors also have use as an ability but cannot complete tasks with it. Use is in the bottom right corner of the screen, and can be replaced by Security, Admin, Vitals, or Doorlog when near the appropriate panel.
When An Impostor kills a Crewmate, their body drops to the ground, broken in half with a bone sticking out, and the Crewmate turns into a ghost, appearing next to their body. In this state, a Crewmate can freely move through walls and can (and must) complete tasks to help the Crewmates win. Ghosts can communicate at all times through the chat, but their messages are only visible to other ghosts. They also cannot call emergency meetings or resolve Sabotages. Ghosts are not visible to players that are still alive.
Bodies of Crewmates will remain on the map until a body is reported or a meeting is called. If an eliminated Crewmate has a pet, it will stay on the spot they died.
- A curious case occurs when a Crewmate is killed precisely at the same time a body is reported or an emergency meeting is called. When the emergency meeting ends, their body will appear near the emergency button, possibly leading to another meeting.
- On the Crewmate's back, there is a "backpack" that serves no clear use. While some believe that their packs are for oxygen, it does not appear to be the case because the Oxygen Depleted Sabotage causes The Impostors to win. It is also possible that with a lack of proper weapons, the Crewmates donned their spacesuits and backpacks as a form of protection against threats rather than to survive in space.
- When killed, Crewmates do not display any blood or internal organs in their death animations, though other players will see some blood spurting from the eliminated Crewmate's corpse. The corpse consists of a large bone inside either hollow space or a gelatin-like substance that is darker than the player's color.
- There is an in-game pet named the "Mini Crewmate." It is unknown if this pet is a child of the Crewmate's species, an artificial life form made in their image, or an android.
- It did not take long to create the Crewmate design. The only other concepts were a version without a backpack, one resembling the Mini Crewmate, and one shaped like a star.
- The Crewmate's species is unknown. While at first glance they appear to be cartoonish humans in almost-featureless colored space suits, the MedBay scanner states the Crewmates are only three feet and six inches (approximately one meter) tall, much shorter than the average adult human. However, like humans, they require oxygen to survive.
- Many official Twitter posts from Among Us developers, as well as in-game details, disprove that Crewmates are humans.
- Their hands are also not visible when not in use and only show up in certain scenarios. They also lack arms, and their hands appear suspended in mid-air and can even appear and disappear at will.
- Upon movement, all Crewmates, and Impostors, will have a "squinted" viewing visor.
- With a height of 3' 6" and a weight of 92 pounds, all Crewmates except Fortegreen have a BMI of 36.7. According to the Centers for Disease Control and Prevention, this BMI equates to Class 2 obesity in humans, although the extra weight could be the spacesuit or just the healthy weight of the Crewmate's species.
- Fortegreen is also 3' 6" tall but has a weight of 132 pounds, which gives them a BMI of 52.6 and equates to Class 3 obesity in humans.
- Originally, in the beta version, the viewing visor would not be a baby blue like color. It would be the same color as the suit.
- Several gaming websites criticize the Crewmate role, one of the Rock, Paper, Shotgun, as Craig Pearson considered this role "exhausting." 
- The anatomy of a Crewmate is made up of a single bone, according to the Among Us developers' Twitter account.
- In a tweet from Among Us, a short GIF shows that Crewmates appear to be unable to eat.
- Another tweet from the Among Us developers on Twitter says that Crewmates drink through osmosis.
- A vending machine in Cafeteria on MIRA HQ shows that one Crewmate hobby is surfing. Additionally, several appliances on Polus show another hobby is watching movies.
- The language spoken by the Crewmates is unknown, but multiple English inscriptions are found across the maps.
- The crewmates could be humans in a space suit, however it has not been confirmed by Innersloth.
|The sound played when the Crewmates win.|
- "By the way, this is the only concept art of coming up with the crewmate design. We settled pretty fast.". Twitter, PuffballsUnited. October 7, 2020. Retrieved November 30, 2020.
- "Among Us has made a lying murderer out of me". Rock, Paper, Shotgun, Craig Pearson. August 27, 2020. Retrieved MONTH DD, YYYY.
- "bone". Twitter, PuffballsUnited. October 28, 2020. Retrieved November 22, 2020.
- "you may not like it but this is what peak anatomy looks like". Twitter, AmongUsGame. January 18, 2021. Retrieved MONTH DD, YYYY.
- "frequently asked question: how do Crewmates eat?". Twitter, AmongUsGame. November 30, 2020 2:30PM. Retrieved November 30, 2020.
- "osmosis". Twitter, AmongUsGame. November 30, 2020. Retrieved January 4, 2021.