Board Thread:Super Smash Bros. Discussion/@comment-25462958-20140925145732/@comment-32390199-20141102035425

Somewhere I do have a feeling that Ice Climbers will be DLC, but then Wii U exclusive. Yes, I know Sakurai said that both versions will share the same characters. But I think duo to the Ice Climbers not being able to be on the 3DS that they shouldn't be excluded from the Wii U version. And I guess you can make an exception on that rule (both versions have the same chars) when it comes to DLC.

However aside from Mewtwo and the Ice Climbers, I really really think that Isaac will be DLC. He was scrapped as an AT (and it would be weird to only have him in the Wii U version as Golden Sun is a popular game series). There are no trophies of his series, while Golden Sun is a handheld game. I think there is likely that he will be DLC.