The Fourth Powerpuff Girl Theories
These are Theories that I think might happen. If you had already seen the commercial on YouTube or during the episode "Bridezilla", you would probably already know that the Fourth Powerpuff's signature color is purple and that she has blue hair.
Now let's recap:
It will probably not be Bunny because she died because she was unstable and that she wasn't seen in other episodes after that and I'm going to feel pretty stupid saying this but what if the fourth Powerpuff girl was actually pretending to be a hero. In the episode, "Odd Bubbles Out", a new girl named Chelsea was introduced but we found out she was a robot later in the episode so it probably won't be her. Also in the advertisement for the upcoming episode, "Power of Four", it is revealed that the fourth Powerpuff girl has hair similar to Blossom's so probably she kind of looks like a Blossom 2.0?
So what are her powers?
Not much is known except that she has flight abilities and I think she might have fire and water powers?
Sorry this is short but leave comments below and please keep rude comments to yourself.