In crafting the creature and giving it life, Victor Frankenstein takes on the role of God, assuming a power that is divine, and, not to be trifled with by men. Victor, in his desire to expand his creative knowledge, his drive, his ambition to know the origin of life, puts him in conflict with the Provence of God. He ventures into the realm of God, committing a grave sin, the creation of the monster, and then, subsequently is punished.
Similarly, Prometheus, on instructions from Zeus, creates a race of men from clay and water. However, the race of beings are not as obedient and do not adore the god as he pleases, so Zeus denies the being the use of fire.
Promethus, on the side of the human beings, brings fire to man behind Zeus's back and is then punished by the god for his disobedience.
What Victor Frankenstein and Prometheus share are a creative spirit, responsible for crafting beings, as well as a destiny of eternal suffering for going beyond the limits. Victor creates life, crossing into a realm exclusive to God, the creator, Prometheus, disobeys Zeus and gives humans fire.
It can be argued that Prometheus was more loyal to his creatures that Victor Frankenstein, who abandoned his monster because he was repulsed by his hideous appearance. At least Prometheus fought for his creation against the power of Zeus.