Esme Pascal
At the end of the first season, she seemed smart, competent, and willing to help her fellow woman(LaGuerta) despite her connection to Captain Matthews.
Second season: I GOT MAN TROUBLES!!! BLARGHITY WHY ARE MY DETECTIVES NOT HELPING ME WITH THAT NO GOOD MAN?!?!?!
What is the deal with that? I would have enjoyed her back and forth with LaGuerta, but it just seemed like they wanted to ditch her for a stupid reason.