Also known as: Imposter
A character from Among Us.
Essentially a killer in disguise as a crewmate, the imposter is presumably an Alien who is tasked to kill every crewmate and preventing them from doing their tasks to win the game.
In the Animated series of the show, the Impostors are alien beings which came from the egg ores from the Skeld, basically crewmates without a bone, which means Green and Orange were already impostors at the start.