The Butlerian JihadBrian Herbert, Kevin J. AndersonLegends of Dune, book 1

Characters in The Butlerian Jihad

9 characters, main characters first.

Main characters

Serena Butler
A noblewoman whose personal tragedy ignites the jihad.

Antagonists

Thinking Machines
Erasmus
An independent robot who studies and torments humans.
Also in The Machine Crusade, The Battle of Corrin
Omnius
The all-controlling machine overmind.

Supporting characters

Vorian Atreides
Son of the machine warlord Agamemnon, an Atreides forebear.
Xavier Harkonnen
A heroic military leader of the League of Nobles.
Also in The Machine Crusade