You can't unfortunately, but that would be hilarious and fun if you could! The only playable covenant in Halo Reach is the elite. Lets just cross our fingers they let us play as grunts in Halo 4 which is coming out Holiday 2012.
You dont..
You can in HALO 1 if you use mods, but it has to be on the computer.
no
There is no grunt ability. Just - Sprint, Hologram, Evade, Jetpack, Invisibility, and Armour Lock.
Joseph Staten has: Played Grunt in "Halo" in 2001. Played Additional Voices in "Oni" in 2001. Played Grunt in "Halo 2" in 2004. Played Grunts in "Halo 3" in 2007. Played Grunt 2 in "Halo: Reach" in 2010.
Don't you know anything about halo? no! of course you can't play as a grunt! what do you think this is? national bush week? playing as a grunt... what kind of world would this be if you could play as a GRUNT? of all aliens, you ask about a grunt. n00bs, these days. they just get dumber and dumber.
Grunt crap, Elite urine, sweaty brute.
By Grant I assume you mean a Grunt. But no is the anwser but in multiplayer you can be an Elite
a grunt.
there are a few different grunts in reach, first the orange grunt minor , then the round backpacked green grunt spec-ops with goggles , the red grunt with a awsome backpack, and my favorite the silver round backpacked helmeted grunt ultra
No but you can be a grunt in halo1
It is impossible to play as a grunt in Halo: CE (aka. Halo 1) without modifying the game.