William Frankenstein

Victor's youngest brother (introduced this chapter), very tall for his age with sweet laughing blue eyes, dark eyelashes, curling hair, rosy cheeks, and dimples when he smiles; he has already had one or two little "wives," his favourite being Louisa Biron.

Victor's youngest brother, a tall, sweet-eyed, curly-haired boy who had already had childish 'wives,' favoring Louisa Biron. On the evening of May 7th he teased Elizabeth into letting him wear Caroline Beaufort's miniature, then was murdered and found strangled at Plainpalais with the print of the killer's finger on his neck.

Victor's beautiful young brother, previously found strangled at Plainpalais with a killer's fingerprint on his neck; it is now revealed that, while playing near Geneva, he encountered the Creature, cried out that he was an ogre and that his father was the syndic M. Frankenstein, and was strangled to death by the Creature in a fit of rage.