i want to play as the dog in that game.

I dunno how they would get a full game of fun gameplay out of calling people at inopportune times and then calling them back when they hang up on you to tell them how rude it is.

You play as Otis and you decide the most inopportune times to call random videogame characters. I could see a game being made about it, and then when you're done with the main quest, you get to watch a cutscene where Otis goes to the bar (and then the game ends).

HAHA, now that I would buy.  You could just ruin all the greatest moments in video game history as Otis.  I can see it now.  Link has both hands wrapped around the hilt of the Master Sword, and all of a sudden his phone rings. 

i have a hunch that she will be playable on the new Splinter Cell. but older, and trying to help her dad.

Okay what about Princess Daisy.

pikmin by themselves no olimar

any character from the Metal Gear series.
Zelda, and im not counting the horrible CDI games
thats probably all i can think off right now

Final Fantasy VII Crisis Origins : Sephiroth.

 On the mission to save his own species, and doom the rest of the galaxy by doing that :)