Edward was in Chicago, so he's definitely a Yankee.
Emmett, on the other hand, is from Tennessee, so he's a Confederate.
As for personalities, it's not really fair to say that this person's good and this person's bad according to who they fought for. There were not nice people in both armies, so I couldn't say. I'm not really sure what you're asking. Location played the biggest role deciding which side you fought for. Robert E. Lee believed in the Union and its ideals, but his loyalty to his state (Virginia) ended up more powerful than his loyalty to America.
Sorry I sort of went off! I'm a huge history geek!