Firefly is one of my favorite sci-fi shows, and it boasts one of the best ensemble casts ever assembled. The show obviously didn't go on along enough to take the characters very far, but I think it still managed to develop them moreso than many, many other shows pull off in just half a season. But is there a main character in the mix that doesn't quite click with you?
For me it's Zoe. I never quite bought her chemistry with Wash until it was too late (her last few scenes in Serenity
are terrific) and overall she never quite gelled with the rest of the characters, IMO. Nothing to do with the actress---I think all the show's actors were really great, but something about the writing just didn't click properly for me. Do you love all nine of 'em, or is there one you can single out as "least favorite?" Even if only a little.