Despair

"An unsuccessful breed of homunculi with prominent sadness affinities. It is not wise to combine three different ingredients."
 * -Faust's Notebook

Appearance
Her body is very unstable and fragile, some parts are not attached together, limiting her abilities. She has a heart-shaped hole in her chest, very long hands, and her feet are almost paw-like. From her human-like eye, Despair leaks tears to mark her sadness-affinity and distinguish herself from the other failed sisters.

Tier I
You told me from the beginning that I was a failure. I am so sad to hear that. You said that my work will not be as good as the others. I am sorry that I spent my first day just staring at the wall of my room, wondering what the purpose of my insignificant life could be. I think my best will never be better than what others can do with only half the effort. Somehow I must find a new way to help you. I will be thinking about how to do it in my room. I talked to my sisters when I went out. I cannot believe what you will do to us! I feel that whatever I do from now is in vain. Please do not do the same to me. I will definitely fine some way to be more helpful.
 * Hello Daddy,
 * Hello Daddy,
 * Hello Daddy,

Tier 2
I try so hard, Daddy. Please do not say I am a failure. I know that it is true, but it hurts me to hear those words. I hear them repeating over and over when I sit in darkness inside my room... I try to succeed but my body betrays me every time. I do not know for how long I can keep trying. The only solace anymore is the darkness in my room. There I cannot see my failing body, and no one can hear me cry. Last night I gave up and let the tears pour down. I was listening to the sound of my own sobbing when I realized I was not alone. I could hear my sister sobbing too, and begging. Then I heard her say Father. Now I know the cost of failure. Good bye, Daddy. Remember how I tried...
 * Hello Daddy,
 * Hello Daddy,
 * Hello Daddy,

Tier 3
Hearing that I am a failure is no surprise. I feel like nothing will ever matter, so your words must be true. I will just trudge on, and maybe someday a place for me will appear. I doubt it, though. Life is suffering. I was walking with my head down, not paying attention to where I was going and I found myself in the dirty part of town. It looked so sad and worn down that I felt at home. I think I will spend more time there. I met a man in the slums. He understands me, unlike you. He says there is no need for a house. When there is no light in the world, it does not matter if things are dirty. I want to move out and live like he does. I do not think you will miss me, Dad.
 * Hello Dad,
 * Hello Dad,
 * Hello Dad,

Death
Failed homunculus have the same death scenes.

Faust feels no regret watching her die by electrocution. After throwing the switch, he feels a burden lift from his shoulders. With the flip of that switch, the electric chair has freed him from his failure.

Personality
Due to her nature as a failed Sadness homunculus, Despair is a literal example of her name. Her letters show her expressing that she feels misunderstood and lonely, and she even says that "there is no light in the world" and that she does not believe Faust cares for her at all.