In stark contrast to Dr. Frankenstein's expectations upon succeeding at a task at which he had labored for two years, in effect, the anticipation of exhilaration, he was instead horrified by the sight before him. The hideousness of his creation was immediately too much for him to bear, and he fled the room. His next encounter with his creation was when, as he lay in bed, the creature approached him with curiosity. Again, Frankenstein fled both out of fear and repulsion.
The enormity of the creature and its horrific appearance, aptly described in Volume I, Chapter 4, caused Dr. Frankenstein to instantly regret his labors to reanimate human tissue.