http://tvtropes.org/pmwiki/pmwiki.php/WMG/Halo2 Following WMG / Halo 2 Go To × Edit Locked Awesome Characters Funny Headscratchers Laconic NightmareFuel Quotes TearJerker Trivia VideoGame WMG YMMV Create New - Create New - Analysis FanWorks FanficRecs Fridge Haiku Heartwarming ImageLinks PlayingWith Recap ReferencedBy Shocking Timeline The Needler Sentinel is a time-travelling robot intent on saving the universe from all forms of evil.Bungie couldn't have placed it there for no reason. Previous Index Next WMG/Halo Halo: Reach Halo WMG/Video Games Halo: Reach