Unlikely Super Smash Bros. Brawl Characters

Gamedaily:

Up First, Master Chief from Halo

"Why He Won’t Show up: Simple – he’s Bungie’s baby. And unless Bungie makes some sort of superstar deal with Nintendo under Microsoft’s nose (or at least comes to an agreement over the long-rumored Halo DS port), he’s bound to stay in Microsoft’s corner."

"It’s A Shame Because: We’ll never see Samus Aran vs. Master Chief."