Shredder 4
The Shredder Drones are a type of alien weapon used by the alien Regents in the movie and in the console version of the video game. 

Attacks and abilities:Edit

The Shredders are described as being razor sharp multi directional chainsaws wrapped around a truck sized sphere. They are launched from the alien flagship and can be programed to attack specific targets. As well as being used to destroy enemy shipping, the Regents commonly use them to attack targets on land to cause chaos, disruption and cut off means of reinforcements. Shredders can glide through the air and hurtle on land at very high speeds smashing anything in their path. Shredders can even unreel some of their razor sharp chainsaw blades to slice apart objects. One Shredder used this ability to slice the tail off an ascending helicopter when the Shredder fails to crash through it. When all of their objectives are complete the shredders self destruct. In the battleship video game the shredders appear smaller than in the movie only slightly bigger than a football. They also appear more often on land and they attack by rolling towards the player and exploding. The player can counter this by shooting and blowing up the shredders before they get too close. They even appear in two types, red ones and blue ones. Red ones attack straight away the moment they appear whereas the blue ones hide in the ground and form a minefield only attacking if the player walks near them.