Debut: Mother 3 (2006)
Background: Lucas is the son of Flint and Hinawa and has a brother, Claus. He is the main protagonist in Mother 3. Characterized as a cry baby at the beginning of the game, Lucas becomes braver later in the game while aiding in the battle against the Pigmask Army.
Reasoning: Lucas was from a Japan-only game and was a clone of Ness in SSBB.
Probability: Hard to say but I would wager it is likely that he will be removed, if anyone. Behind Ice Climbers and Snake I would say he maybe the next most probable character not including those who are typically replaced with someone else from their own series such as Ike.
Thoughts:I prefer Ness over Lucas, and they were just so similar. Until reading a Wiki article, I had no idea who Lucas was or any details about Mother 3. Sakurai said he is appealing more to western audiences with the new releases, supposedly (though I doubt it). This may mean Lucas will be removed. Not that I minded having him along, but I won’t miss him either. I’d peg him as number 2 of 6 to be removed from my list.