Choose one of them. Most of them are still single.

Note: You can't choose Cream though.
Well, Blaze, Rouge and Amy are already shipped off. I'm sort of uncertain between Belle or Surge.
"Love is the ultimate outlaw."
Which would be the case if I picked Cream.
As long as they're free, they are safe.
If money's involved, Nintendo ninjas would suddenly show up from nowhere.

To be fair, I think any fan content should be allowed as long as it's free. If not, then they're trying to make money over soneone elses IP. And that's bad.
I'll get the game ... but not day one. I'm still salty for getting Team Sonic Racing day one and barely playing it.
I'll wait until a Steam Sale.