Let's just drum up a name and an appearance for our characters, since we've covered background. 

I was thinking that they would crossover at some points, but the rest of the time, they would be separated. 

Yes, I think we should say that the Doctors never met the other companions, Rose, Donna, Martha, Sarah, etc. 

I'm fine with posting 2-5 paragraphs for my characters. 

Picking some episodes sounds good. ^^