[quote][b]Posted by:[/b] Sliding Ghost Sentinels show up 3 times in Halo 4. It's really pathetic. Even the Sentinels in Halo 3 actually did something. And you could ride on them. Requiem: -at the start of rally point bravo -right before you go to the pulse generators -combative Sentinels fight off the Hunters (this is the only time where they have a weapon) Reclaimer: -they're all over the place in that Forerunner structure. It's possible to spawn them after the Prometheans spawn and the Prometheans will attack them but they don't attack back :/ Midnight: -they can be seen as allies and enemies. Allies in the weapons cache, enemies everywhere else[/quote] Forgot about Midnight. Maybe they're tied to the Sentinal Factory and since we haven't seen one of those since Halo 2 (that I know of) then that might be why they haven't shown up.