Board Thread:General Discussion/@comment-6192846-20150822000535/@comment-6192846-20150822172937

I said this before, but "twins" from across parallel worlds isn't a new concept. Besides the different sexes, the characters typically have the same genes and would be, for all intents and purposes, fraternal twins, they just weren't actually born in the same realities. A fond example in recent memory is the Lutece twins who also consider each other as twin brother and sister despite the scientists coming from separate worlds.