Frankenstein's Monster is one of the main characters in the Universal Monsters series.
He made his debut as the main antagonist of the 1931 Universal Pictures adaptation of Mary Shelley's classic novel Frankenstein and returned in nearly every other instalment. He was the creation of Dr. Henry Frankenstein and, although not truly evil, eventually became hostile and violent due to the mistreatment he suffered.
This character's iteration was portrayed by the late Boris Karloff.