1. Robert Catesby: The leader of the plot and a devout Catholic who felt that the only way to restore the Catholic faith in England was through violence.
2. Thomas Percy: A close friend of Catesby and a former member of the Queen's Bodyguard.
3. Guy Fawkes: A professional soldier and explosives expert who was hired to guard the gunpowder.
4. Robert Keyes: A Catholic gentleman from Worcestershire who provided financial support to the plotters.
5. Thomas Wintour: A Catholic recusant who helped recruit other conspirators and arrange the purchase of gunpowder.
6. John Wright: A Catholic priest who provided spiritual guidance and encouragement to the plotters.
7. Christopher Wright: John Wright's brother and a fellow priest who was also involved in the plot.
8. Ambrose Rookwood: A Catholic landowner and friend of Catesby who provided horses for the conspirators.
9. Everard Digby: A wealthy Catholic gentleman who joined the plot after Catesby convinced him that it was the only way to save Catholicism in England.
10. Francis Tresham: A Catholic gentleman who was initially reluctant to join the plot but eventually agreed to participate.
11. Thomas Bates: A servant of Catesby who was involved in the transportation of gunpowder to the Parliament building.
12. John Grant: A Catholic gentleman who was recruited by Tresham to help with the plot.
13. Robert Wintour: A brother of Thomas Wintour who was involved in the early planning stages of the plot but later withdrew.