Pre52, new52,pre flash point, 616 etc....

I see a lot of people making posts about fights taking place between characters from different eras of comics...I thought it might be helpful if you guys made a list of characters and how they have changed since silver age days,,to the present so there is less confusion about stats and capabilities,,take which ever character you like best and give some good points on how they have changed ,,,and define the era you are using for example,,define flashpoint and why the character has changed,,this should help clear up confusion in future battles

Thought this would get some bites,,,,,it will clear up lots of confusion