>>149784107
>>149785571
>>149785770
>>149785989
Deep EGS lore dump
Originally Susan, Diane had nothing to do with each other. It was just a case of Dan's art style making 2 characters that looked close to each other. Something that had already happened twice already with 4 of the main characters.
Fans pointed out that Susan and Diane had near identical features, once you factor in Susan dying her hair. Once Dan decided to incorporate their similarity into the story. This lead to the terrible decision in my opinion to change Susan design. Ruining the twin aspect and preventing a cool fusion in the future. The thing that made it cool was that they where identical, while having both very similar, and different personalities. Diane an extrovert, Susan's an introvert, etc etc.
>>149650931
Pretty sure at first they where going to be twins adopted by different families. But that would have meant exploring the divorce story, something Dan even in his edgiest phase did not have the stones to do. Once Dan realized he was to much of a coward to deal with the divorce, he started splitting them further and further apart. You will see his thought process pushing the gap between them wider and wider as we go forward. Reminder the occurs over several years, and each time it brought up is another widening of the gap.
This then leads them to the beyond terrible decision to tie them together by way of Raven, the worst character in the comic.