Immortals Duncan has killed:
Immortal killed Episode Slan Quince The Gathering Sherriff Howard Crowley Innocent Man Caleb Mountain Men Alexei Voshin The Sea Witch Reinhardt Revenge Is Sweet Andrew Ballin Eye Witness Grayson Band of Brothers Kuyler For Evil's Sake Sendaro* Saving Grace Gabriel Piton Eye of the Beholder Alfred Cahill Avenging Angel Michael Moore Turnabout Gallen Empathy for Tommy Tommy Sullivan The Fighter Xavier St. Cloud Unholy Alliance Part II Ward The Vampire Drakov aka Arthur Drake Warmonger Nefertiri Pharaoh's Daughter Luther Legacy Martin Hyde Prodigal Son Michael Kent The Samurai Kern Line of Fire Paul Karros The Revolutionary Durgan aka Armand Trone The Cross of St. Antoine Alex Whittaker Rite of Passage Brian Cullen Courage Garrick Shadows Peter Martin Blackmail Lynan Kurlow Blackmail Michael Christian They Also Serve Ernst Daimler Mortal Sins Lucas Kagan Reasonable Doubt Kalas Finale Part II Kanwulf Homeland Andrew Cord Brother in Arms Tyler King The Innocent Kanis Leader of the Pack Kincaid Reunion Killian The Colonel Paul Kinman Reluctant Heroes Kamir The Wrath of Kali Coltec Something Wicked Sean Burns Deliverance Damon Case The Immortal Cimoli Morgan D'Estaing Double Jeopardy Jacob Halati* One Minute to Midnight Kantos Prophecy Haresh Clay The End of Innocence Johnny Kelly Glory Days Cory Raines Money No Object Kragen Haunted Gavriel Larca Little Tin God Ingrid Hennin The Valkyrie Caspian Revelation 6:8 Kronos aka Koren Revelation 6:8 Otavio Consone Duende Lord Byron The Modern Prometheus Richie Ryan Archangel Davon Marek Black Tower Liam O'Rourke Not To Be
*Immortal not actually killed by Duncan but Duncan received the Quickening
If you see any errors or omissions, please email me at eleazar_matta@yahoo.com