Describe "The Underground Man" physically in appearance.

From the text:

I am a sick man.... I am a spiteful man. I am an unattractive man.

This officer was over six foot, while I was a spindly little fellow.

They laughed cynically at my face, at my clumsy figure; and yet what stupid faces they had themselves.

My harassed face struck me as revolting in the extreme, pale, angry, abject, with dishevelled hair.