Roy.
Actually, I wasn't really that interested in the Smash roster/community when Brawl released. I got it as an unexpected Christmas gift and loved it, then it came to me that I had Melee and 64, which got me into playing Smash more.
But I'll say, when I saw that Roy, who was one of my Melee "mains" back when Brawl released, wasn't in the game, I was pretty upset.