Who is Alphonse in the story Frankenstein by Mary Shelley?

There is no character named Alphonse in Mary Shelley's "Frankenstein."

The main characters in the novel are:

* Victor Frankenstein: The scientist who creates the monster.

* The Monster: The creature created by Victor Frankenstein.

* Robert Walton: The Arctic explorer who listens to Victor's story.

* Elizabeth Lavenza: Victor's adopted sister and later his wife.

* Henry Clerval: Victor's best friend.

* William Frankenstein: Victor's younger brother.

* Justine Moritz: A young woman wrongly accused of William's murder.

If you are thinking of another story or character, please provide more context.