Thanks. When you ssay 'you unlocked her after' do you mean right after using Greninja or do you mean way after using Greninja? There's a requirement that says you have to use a character with custom moves and I don't know if that one is true.
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No problem. I definitely unlocked her way after I used Greninja. I barely touched any of the Pokemon at the time; I've never been that big of a fan of any of the returning ones that are in Smash 4 (except Jigglypuff, interestingly). She may be the requirement to use custom moves. I can't say for certain, but she may have been unlocked after I did a Smash Run with custom moves, but when I unlocked her I didn't really put any special circumstances together at the time, and it was over a week ago that I did it at this point. Sorry I can't be more helpful.
Also, Wario may be Classic mode (any difficulty for sure) with Mario or Luigi. That's another one I didn't really connect at the time. To be honest, I unlocked every character except Ganondorf, ROB and Bowser Jr. in the first day I had the game, so a lot of the unlocks didn't really seem like I did anything major, they just happened and I didn't think about it.