If you haven't gotten a chance to watch the Gears of War 3 Comic-Con panel yet, then you probably aren't aware of the new character that will be joining the game. Believe it or not, the "Old Spice Guy" (Isaiah Mustafa) will be voicing one of the game's characters.
As for why Epic chose to go with Mustafa, everyone's favorite game designer Cliff Bleszinski had this to say, "I’ll tell you that we actually, on a lark, decided to cast Isaiah Mustafa, who’s the Old Spice Guy, as one of the soldiers that you can play as in multiplayer… It’s not a huge part, but we know him through different connections and he’s a great guy. We decided to make him one of the soldiers you can play in the multiplayer and he does a great job with the voiceover."
The extra bit of news confirming that he will play a character in multiplayer was not revealed at the Comic-Con panel. Instead, Cliff shared this tidbit of information on Nerd Alert.
[SOURCE]