Elementas Background Brainstorm

So Arin has decided to take on a project that would be both adoreable and terrible at the same time.

Elementas: Origins, the comic.

Basically it would be an illustration on a UNIVERSALLY AGREED UPON background of our lovely family, including how they responded to their elements, their banishments, and their uniting. So I need ALL of you to come here and help us figure out where everyone was and where xD
I'll write up a finalized story at the end of this and draw the comic around that.

This way everyone will be on the same page for exactly what happened and when.

So what do I need from you? Well, first the major things is we have to decide what happened during the two years thats blank. Were Voltage and Glacier sent away from the family (but not banished) when the first litter was born, and then returned at the coming of age only to be banished again?

Who of the second litter were close to the others, what important things happened in the past. How did they respond to their elements, to their banishment, to the return of the older siblings.
The third litter, same thing.

Basically I just need the histories of your characters, any ideas you may have on what they did during those two/three years, and stuff :33

I wont be able to get this started for a while anyways, so the more thought and brainstorming we do the better.

THANK YOU LOVES