9 Scrapped Bosses Used In Other Video Games
4. Halo Wars' Forerunner Sentinel - Halo Wars 2
Halo Wars' eleventh mission, "Cleansing," was originally set to feature a boss encounter with a Forerunner Sentinel during one of the level's later attack waves.
The ship's development got far enough that its model was actually left within the game's code, such that modders have been able to add it back into the game.
Concept art of the vessel was also later posted online by developer Ensemble Studios, but best of all, the impressive-looking machine re-appeared in earnest in Halo Wars 2, now re-dubbed the Protector Sentinel.
While the version in Halo Wars 2 isn't a boss unit and is markedly smaller than the model from the original Halo Wars - as well as not sporting the same Super Sentinel beam - it's still neat that the original design wasn't simply thrown away forever more.