This is the boss queen of the fourth episode in Duke's adventures: "The Birth" which comes with the Plutonium Pak. Not much is known about this alien, although it is known that it resides in an underwater area and it has the nasty ability to lay Protector Drones to protect it. Perhaps you will have better luck with her than the past 15 operatives that have failed to report back.

These heavily armored riot tanks can take a lot of damage before they finally explode. And when they do, expect to find an angered Pig Cop behind a shotgun, aiming right at your face. They can fire back at you with four laser cannons mounted on the sides of the tank.

These aliens are evil in every sense of the word, taking nearly twice the damage of a Pig Cop. So don't expect a single rocket to do the trick. On top of that, these aliens move very fast, jump very high, can claw you at close range, and have the nasty ability to emit shrink rays at greater distances. Their main purpose: To protect their newborn Alien Queen. Two words: Be Afraid!