Engineer- Engineers do all of the building and repairing on board the station. The Station Droid runs around activating nodes while you focus on aliens. And the Loading Arm is a Giant Robot fist that makes short work of soft gloopy aliens. On the Gloop side, the Fire Snail is a long range artillary alien. Push it along with Glooplings, and lob gobs of burning Gloop over the heads of your tougher aliens.

PROS: Station Driod can help to quickly play your strong Three Node card.

CONS: the Engineer is pretty weak until you flip your Loading Arm. Also, you can run out of batteries very quickly. Fire Snail is mind bogglingly slow.