Whoops, I totally knew that, and I don't know why I screwed it up.
I can't remove references to Stage One and Stage Two! Those are the Pokemon progression!
It works like this. You can either choose to be a Basic Pokemon, and evolve to Stage One, then evolve to Stage Two (The maximum)
or you can choose to be a Rookie Digimon and evolve to Champion, then to Ultimate, then to Mega (the maximum). It's totally simple!