There's Victor Frankenstein, a brilliant but hubristic scientist. He's driven by his desire to conquer death and create life. Then there's the Creature, a being with human - like emotions but a grotesque appearance. Elizabeth Lavenza is also a key character. She is Victor's adopted sister and later his fiancée. Her death at the hands of the Creature has a profound impact on Victor.
One of the main themes is the danger of overreaching scientific ambition. Victor Frankenstein's attempt to create life without considering the moral and ethical implications leads to disaster. Another theme is isolation. The Creature is isolated from society due to his appearance, which makes him bitter and vengeful. Also, the concept of nature versus nurture is present. The Creature is born 'good' but turns 'evil' because of the way society treats him.
The original Frankenstein story begins with a series of letters written by a sea captain named Robert Walton to his sister. Through these letters, we are introduced to Victor Frankenstein and his experiments.
In the original novel, there was no such character as the Bride of Frankenstein. The concept was introduced later in various film and media adaptations to add a new element to the story.
They may differ in the way the characters are developed. Koontz might give more depth to the monster's emotions and thoughts. Also, the plot could have new twists. For instance, there could be different motives for Dr. Frankenstein's actions.
Well, in the original story, there's Victor Frankenstein. He's a brilliant but troubled scientist. He's the one who creates the monster out of his over - reaching scientific curiosity. Then, of course, there's the monster itself. The monster is a complex character. He starts out with a certain innocence but is turned bitter by the cruel treatment he receives from society. And there are also some secondary characters like Henry Clerval, Victor's friend, who is kind - hearted and tries to support Victor, but his role is more of a contrast to Victor's darker path.