Florien

Ciel's personal knight and bodyguard, with her since they were both children. Florien, who is normally straight-laced and pessimistic, becomes softer in her presence. He tries to be more formal with her because of the difference in status, but he often ends up giving in to Ciel's kindness.

Florien has had a crush on Ciel for a long time now, but she's oblivious. He blushes easily like a shy puppy when she teases him, which is often.