You don't have to fear this amorphous thing called grief or loss or anger or jealousy. You define it for yourself in the intimacy of your own experience for exactly what it is, and then it comes. In other words, by experiencing your emotions somatically, there is no boogie man to scare you.
I was curious. Here was a character where I just didn't know how they were going to write him into 13 episodes without it being one note. My fear was that I didn't want to join something where I was just going to be this prop and this mustache twirling character.