User blog comment:TimeShade/The Crisis Has Arrived/@comment-28109177-20200115045408/@comment-2054358-20200115053222

We've only seen Central City and Starling City on Earth-2, so new characters from new cities are a possibility. Maybe we could see Power Girl coming from Earth-2? Though Earth-2 people were doppelgangers of their Earth-1 counterparts so it's strange to see a different actress play her. But if alternate Earths can have different actors playing characters and retroactively fit different shows into the Arrowverse multiverse, and Earth-2 characters have a few differences like Barry Allen needing glasses and is not a speedster or Deadshot having bad aim worse than Greedo, I guess Courtney Whitmore of Earth-2 can look different from the time-traveling Courtney. And if she's a modern hero on Earth-2 and not from the 40's, it could be like how Earth-90 Barry looks more like his Earth-1 father than his Earth-1 counterpart or how his Earth-3 counterpart is called Jay Garrick.