The unnamed creature, made from reanimated matter, is a central figure in *Frankenstein*. Initially benevolent, he turns violent due to rejection and isolation. He seeks revenge on his creator, Victor Frankenstein, and grapples with his identity, being compared to biblical figures like Adam and Satan.

Robert Walton is an amateur ship captain whose letters frame the narrative of *Frankenstein*. Ambitious and idealistic, he befriends Victor Frankenstein when he finds him near death. Walton is warned by Victor against excessive ambition.

Henry Clerval is Victor Frankenstein’s childhood friend in *Frankenstein*, known for his kindness and noble spirit. He is a foil to Victor, contrasting in background and interests but sharing a similar ambition for glory and adventure.

Elizabeth Lavenza is the adopted daughter of Frankenstein's family in *Frankenstein* and Victor's intended. Known for her beauty and calming demeanor, she embodies 19th-century ideals of femininity and selflessness, forming a deep bond with Victor from childhood.