superNESjoe
Member
Well, they were fully functional on the Wii U version, anyway. Sakurai himself admitted that they were only cut from said version for parity reasons.
Doesn't mean completed. Could have been just basic functionality and they quickly learned it would cause issues. Probably spent some time trying to address the issue and then cut them when they figured it wasn't feasible.
Cannot imagine the character made it far enough along to be done before it was canned.