Here is an interesting comparison of Cortana over the course of the 4 halo games:
PTesh adds his dulcet prepubescent tones over the top of one of the new trailers for weapons...
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Mantis controller configuration
Level: The Composer
On the level "The Composer" you will come across a marine helping someone in a mantis (the big mechs). He asks "Can you try looking up for me?", a reference to the typical halo configuration gameplay. The marine says "whose the idiot who inverted the stick", "this thing's a mech, not a fighter" implying inverted thumb sticks are for piloting aircraft and not using in FPS games.