The TV series is actually based on a popular comic book and this is how the characters really compare to one another.
Rick Grimes would be missing his right hand and would have straighter hair.
Carl Grimes would be missing half his face.
Carol would have long hair.
The Governor (RIP) would be missing his right arm and left eye, as well as having longer hair and a Fu Manchu moustache.
Deanna Monroe would be a bald man with a goatee, and be named Douglas.
Morgan would have a lot more hair.
Father Gabriel would have more hair.
And Daryl Dixon simply wouldn’t exist.