A nemesis is a seemingly unbeatable or unconquerable enemy, often used as a foil to the protagonist, where interaction between the hero and his antagonist forms the main conflict of the story.

Other meanings

Culture

• Nemesis (mythology) – the Greek goddess of divine retribution.
• Nemesis (Nobel) – a play by Alfred Nobel.
• Nemesis (Asimov) – a science fiction novel written by Isaac Asimov.
• Nemesis (Christie) – a detective novel by Agatha Christie.
• Nemesis (film) – a science fiction movie released in 1993 that spawned three sequels.
• Nemesis the Warlock – a story published in the British comic 2000 AD.
• Star Trek: Nemesis – the eighth Star Trek movie, released in 2002.
• Nemesis (Transformers) – a starship in the fictional universe of the Transformers.
• Nemesis (DC Comics) – a superhero in the DC Universe, affiliated with the Suicide Squad.
• Nemesis (Marvel Comics) – a superhero in the Marvel Universe, affiliated with Alpha Flight.
• An inverted roller coaster at Alton Towers theme park in the United Kingdom, built in 1994.

Science

• 128 Nemesis - an asteroid.
• Nemesis (star) - a hypothetical companion star of the Sun.
• Nemesis (computing) - an operating system designed by University of Cambridge, University of Glasgow, Swedish Institute of Computer Science and Citrix Systems.

Computer and video games

• - a computer role-playing game in the Wizardry series.
• Zork: Nemesis - an adventure game in the Zork series.
• A name used for some installments of the Gradius video game series, mainly in Europe.
• Resident Evil 3: Nemesis (original Japanese title: BioHazard 3: Last Escape). Nemesis is the namne of a deadly biomechanical assassin made by the Umbrella Coorporation. Resident Evil: Nemesis was also a working title for the movie Resident Evil: Apocalypse.