#3 Guilty Spark – Halo 3
At the very end of Halo 3 Master Chief has one task left, to activate the Ark which will set off the Halo rings. The only thing that seems to be in your way from destroying the Ark is Guilty Spark, but players had no worries when battling this little robot. Guilty Spark had weak attacks and players even holds a Spartan Laser with infinite ammo making the actual battle a very easy one. As a boss battle, this was a pretty lame one but luckily the tense race that follows this battle proved to be fun and exciting.