Question: Bones is an American crime procedural drama television series focusing on forensic anthropology and archaeology, on which actor Eric Millegan plays which character?
Context: Kathleen Joan Toelle Reichs ( ; born July 7, 1948) is an American crime writer, forensic anthropologist and academic.  She is an adjunct professor of anthropology at the University of North Carolina at Charlotte; as of 2016 she is on indefinite leave.  She is also affiliated with the "Laboratoire des Sciences Judiciaires et de Médecine Légale" for the province of Quebec.  She is one of 100 anthropologists certified by the American Board of Forensic Anthropology and is on the Board of Directors of the American Academy of Forensic Sciences.  Her schedule also involves a number of speaking engagements around the world.  Reichs has been a producer for the TV series "Bones", which is loosely based on her novels, which in turn, are inspired by her life.  She has two daughters, Kerry and Courtney, and one son, Brendan. William Marvin Bass III (born August 30, 1928) is an American forensic anthropologist, best known for his research on human osteology and human decomposition.  He has also assisted federal, local, and non-U.S. authorities in the identification of human remains.  He taught at the University of Tennessee in Knoxville, and though currently retired from teaching, still plays an active research role at the University of Tennessee Anthropological Research Facility, which he founded.  The Facility is more popularly known as "The Body Farm", a name used by crime author Patricia Cornwell in a novel of the same name, which drew inspiration from Bass and his work.  Bass has also described the body farm as "Death's Acre" – the title of the book on his life and career, co-written with journalist Jon Jefferson.  Jefferson and Bass, under the pen name "Jefferson Bass", have also written several fictional works: "Carved In Bone", "Flesh and Bone", "The Devil's Bones", "Bones of Betrayal", "The Bone Thief", "The Bone Yard", "The Inquisitor's Key", "Cut To the Bone", and "The Breaking Point".  Bass is the third generation in his family to have an educational building named after him.  The Dr. William M. Bass III Forensic Anthropology Building dedication ceremony was September 27, 2011, near the Body Farm. Deception is an upcoming American crime procedural drama that is set to air on ABC during the 2017–18 season. The Equalizer is an American crime drama television series, originally airing on CBS from fall 1985 until late-spring 1989.  It starred Edward Woodward as a retired espionage/intelligence officer with a mysterious past, who uses the skills from his former career to exact vigilante justice on behalf of innocent people who are trapped in dangerous circumstances.  The series combined elements of the spy film, private investigator/police procedural drama, and vigilante genres. Temperance "Bones" Brennan, Ph.D. (born Joy Keenan) is a fictional character portrayed by Emily Deschanel in the American Fox television series "Bones".  An anthropologist, forensic anthropologist, and kinesiologist, she is described in the series as a leading authority in the field of forensic anthropology.  Brennan first appeared on television, along with other series characters, in the "Pilot" episode of "Bones" on September 13, 2005.  She is the main protagonist of the series along with FBI Special Agent Seeley Booth (David Boreanaz). Eric Millegan (born August 25, 1974) is an American actor, best known for his role as Dr. Zack Addy on the Fox series "Bones". Zachary Uriah "Zack" Addy, Ph.D, is a fictional character in the television series "Bones".  He is portrayed by Eric Millegan.  The character was introduced as Dr. Temperance Brennan's brilliant young assistant at the beginning of the series before he received his doctorate in Forensic Anthropology in Season 2.  Millegan was a series regular for Seasons 1 to 3, appearing in all episodes.  Since then, he has made guest appearances in Season 4's "The Perfect Pieces in the Purple Pond" and "The End in the Beginning" (dream sequence), Season 5's "The Parts in the Sum of the Whole" (flashback) and returned in the Season 11 finale "The Nightmare in the Nightmare", and will have a recurring role in series' final season.  In the series penultimate episode "The Day in the Life", Zack is exonerated for the murder that left him locked up since the third season finale, opening the way for him to return to society in just over a year's time. "Forensic Heroes III" is a 2011 police procedural television drama serial set and filmed in Hong Kong.  Produced by Television Broadcasts Limited (TVB), Mui Siu-ching serves as the drama's executive producer with Choi Ting-ting and Leung Man-wah as the executive writers and editors.  The drama closely follows a team of technicians and professionals from the Forensic Science and Pathology departments of the Hong Kong Police Force.  Working closely with the West Kowloon District's Serious Crime Unit, they use high modern technology and scientific analyses to solve crime.  "Forensic Heroes III" is a reboot of the "Forensic Heroes" franchise, which was in turn inspired by Hong Kong's 2002 costume drama "Witness to a Prosecution" and the CBS on-going television series "". Vampire Prosecutor () is a South Korean television series, starring Yeon Jung-hoon, Lee Won-jong, Lee Young-ah and Kim Joo-young.  The crime procedural drama tells the story of a prosecutor who hides his identity of being a vampire and solves crimes with his special powers. Bones is an American crime procedural drama television series that aired on Fox in the United States from September 13, 2005, until March 28, 2017, for 246 episodes over twelve seasons.  The show is based on forensic anthropology and forensic archaeology, with each episode focusing on an FBI case file concerning the mystery behind human remains brought by FBI Special Agent Seeley Booth (David Boreanaz) to forensic anthropologist Dr. Temperance "Bones" Brennan (Emily Deschanel) and the personal lives of the characters.  The rest of the main cast includes Michaela Conlin, T. J. Thyne, Eric Millegan, Jonathan Adams, Tamara Taylor, John Francis Daley, and John Boyd.
Answer: Dr. Zack Addy