I have got 3 characters, but I mostly play with one.
Kaj, A Khajiit Thief, Guildmaster of the Thievs Guild, Nighingale and a Thane of Hjaalmarch, Whiterun and The Rift (I'll explain further down).
Kaj was raised by an Imperial who was killed by a bunch of guards. Kaj was mad at them, and as a young boy had a good use of bow and arrow. That night he swore not to listen to law. But he tends to help people. A lot. And that is his only weakness and also a big virtue. He doesn't like the Stormcloaks or The Empire, but he hates The Thalmor, and thinks they screwed him up a lot. so he does the same to them.He has got a house in Riften (buissness) and Whiterun (pleasure). He likes smithing and alchemy, especialy invisibility potions. He also hates all Deadra, not counting Sanguine (a nice guy, he is), Nocturnal (he IS a Nighingale, ya know) and Mira... something (she hates undead, and you don't need to be a Deadra or evil to do so).
Leila, A Stormcloak officer
She was a Stormcloak since the war started, and was with Ulfric when it ended. She hates th Thalmor and the Empire with all of her soul.
Devon, The true Dragonborn
All he cares about is ending the life of Alduin, and nothing else.
By the descriptions you can really see with who I play the most, can't you?