I wasn't counting him/her/it, no.
There were only 5 "real" secret characters: Marth, G&W, Mewtwo, Luigi and the Jiggs. Ness and Falcon were open from the start, as well as Bowser, Zelda, Climbers and Peach, added to the original 8.
Thus, there were 19 actual characters in SSBM. 12 have been revealed and are neatly denoted as vets on the SSBB site, that leaves 7 to be revealed and 9 weeks to show them off.
We all assume the 'Dorf will be back, considering they delayed Melee to add him (or he was at least requested to the point that they added him). Even if none of the other clones make it back, that's still 8 Melee vets and 9 weeks (assuming Marth and Ness weren't axed).
I just want to say that I think locking characters that have been in past games is downright silly. It's like letting someone watch while you wrap a present and then handing it to them.