From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Characters make the story interesting in all three of the Battlestar Galactica series shows. Each series has no shortage of characters to make every show that has been produced interesting and dynamic. Dramatic changes have been made to the characters of the Original Series for the Re-imagined Series. Boomer in the original Battlestar Galactica was a black man, whereas Boomer in the Re-imagined Series is an Asian woman (and a Cylon). Religion, sexuality, and even nationality are now part of each characters' motives, making Galactica a place that is influenced by real-life situations.