Fortegreen is a strange olive green colour, like other impostors he's equipped with a toothed mout, long serrated tongue and clawed hands. He possesses fleshy tentacles that can shoot from his back to impale enemies. Fortegreen possesses two other weapons, a pistol and a knife. Fortegreen is from a planet called Polus and attempts to blend in with other crewmates in order to eventually kill them off one by one. Fortegreen possesses the ability to shift colours to match a crewmate's exact colour