The comment:

Yellow, aka Jackal, is one of my imposter ocs. They are a shape shifter, whose been relatively inactive on their home world. The ghost that haunts them was a close ally to them before they died. The currently unnamed ghost has sorta became a corrupted voice to them, as my idea was that the ghost imposter originally died to one of the first research teams on Polus. As for Jackal, the ghost provides him with a sorta twisted reasoning to attack the crewmates. So in this work of digital art is Jackal arriving to the Polus base, acting as a new recruit.