Species Location Weapon Abilities The ghoul spider is an enemy in The Lost Frontier. It is encountered in three missions, the second of which features a fully-mutated dark eco version of the enemy. It is presumed that they were experimented on by the Aeropans as part of the Dark Warrior Program, as they are encountered in the Aeropa sewers and abandoned research rig, both areas associated with Aeropa and massive amounts of dark eco.