Question: Heaven's Gate was an American UFO religious millenarian group, based in San Diego, California, founded in 1974 and led by who, also known as "Bo" and "Do", among other names, was an American cult leader who founded what became known as the Heaven's Gate religious group, and organized their mass suicide in 1997, claiming the lives of thirty-nine people?
Context: The San Diego Music Awards are an awards show held annually in San Diego, California, United States, to recognize the best bands and artists in local music.  The awards have been held since 1991 and were originally organized by the city's main local music publication, (formerly called SLAMM), which eventually became the alternative newsweekly "San Diego CityBeat".  The awards are now organized by the San Diego Music Foundation.  The show benefits the San Diego Music Foundation, a non-profit organization dedicated to promoting San Diego music education programs.  Over the years the show has featured awards in a variety of categories covering nearly every genre of music, and featured live performances by such major-label recording artists as Blink-182, Switchfoot, and Jason Mraz, as well as lesser known up-and-coming artists, such as Steve Poltz. Jonestown: The Life and Death of Peoples Temple, is a 2006 documentary film made by Firelight Media, produced and directed by Stanley Nelson.  The documentary reveals new footage of the incidents surrounding the Peoples Temple and its leader Jim Jones who led over 900 members of his religious group to a settlement in Guyana called Jonestown, where he orchestrated a mass suicide with poisoned Flavor Aid, in 1978.  It is in the form of a narrative with interviews with former Temple members, Jonestown survivors, and people who knew Jones. UFO religions are groups which deal with alleged communication between humans and extraterrestrial beings.  Forms of communication include telepathy and astral projection.  Groups often believe that humanity can be saved after being educated by the aliens as to how to improve society.  Alien abduction belief can lead to formation of a UFO religion.  I AM Religious Activity, founded in 1930 by Guy Ballard, is seen, according to one author, as the first UFO Religion, though Aetherius Society founded by George King has also been given this distinction.  Scholars identify the 1947 Roswell UFO Incident as a key event within the history of UFO spirituality.  Melodie Campbell and Stephen A. Kent describe Heaven's Gate and Order of the Solar Temple as among the most controversial of the UFO belief groups.  Scientology is seen by scholars as a UFO religion, due to its Xenu cosmogony and the presence of Space opera in Scientology doctrine. James Warren Jones (May 13, 1931 – November 18, 1978) was an American religious and cult leader, who initiated, and was responsible for a mass suicide and mass murder in Jonestown, Guyana.  He believed communism was the correct social order, in compliance with God's will.  Jones was ordained as a Disciples of Christ pastor, and he achieved notoriety as the founder and leader of the Peoples Temple, which was often described as having cult-like qualities. Bonnie Lou Nettles (née Trousdale; August 29, 1927 – January 20, 1985), later known as Ti, was co-leader of a group with Marshall Applewhite that later became the Heaven's Gate group after Nettles's death.  Nettles died of liver cancer in 1985 in Dallas, Texas, twelve years before the group's mass suicide in March 1997. Marshall Herff Applewhite, Jr. (May 17, 1931 – March 26, 1997), also known as "Bo" and "Do", among other names, was an American cult leader who founded what became known as the Heaven's Gate religious group and organized their mass suicide in 1997, claiming the lives of thirty-nine people. Heaven's Gate was an American UFO religious millenarian group based in San Diego, California, founded in 1974 and led by Marshall Applewhite (1931–1997) and Bonnie Nettles (1927–1985).  On March 26, 1997, police discovered the bodies of thirty-nine members of the group who had participated in a mass suicide in order to reach what they believed was an extraterrestrial spacecraft following Comet Hale–Bopp. The Aetherius Society is a millenarian, New Age, UFO religion.  It was founded by George King in the mid-1950s as the result of what King claimed were contacts with extraterrestrial intelligences, whom he referred to as “Cosmic Masters”.  Regarded as firmly based in Theosophy, the Aetherius Society combines UFO claims, yoga, and ideas from various world religions, notably Hinduism, Buddhism, and Christianity.  Stefan Isaksson notes that it has “become a complex religious belief system that includes an extraterrestrial hierarchy of various spiritual masters and such concepts as universal karma and religious healing.”  The religion's goal is to prevent worldly destruction by improving cooperation between humanity and various alien 'masters', and by using 'spiritual energy' to improve the spiritual calibre of the world.  The society has claimed that various disasters may be prevented or relieved by prayer, often aided by "Spiritual Energy Batteries" meant to store healing psychic energy The society also believes that it is to make the way for the "Next Master," a messianic figure who will descend upon Earth in a flying saucer, possessing 'magic' more powerful than all the world's armies.  The society is named after Aetherius, a being King claims to have telepathically contacted and channeled.  Aetherius is believed to be a Cosmic Master from Venus, as are Buddha and Jesus.  The society's membership, although international in composition, is not very large.  David V. Barrett suggested in 2011 that the worldwide membership was now into the thousands, with the largest number of members being in the United Kingdom, United States and New Zealand. Bad Dreams is a 1988 American horror film co-written and directed by Andrew Fleming and starring Jennifer Rubin, Bruce Abbott, E.G. Daily, Harris Yulin and Richard Lynch.  It was produced by Gale Anne Hurd.  The plot follows a young woman who awakens from a thirteen-year-long coma and finds herself being stalked by the ghost of a cult leader who led a mass suicide by fire that she survived as a young girl. Luc Jouret (18 October 1947 – 5 October 1994), born in Kikwit, Belgian Congo, was a Belgian religious group leader in Switzerland.  He co-founded the "Parti Communautaire Européen" with Jean Thiriart, a leading member of the neo-Nazi "Jeune Europe" Belgian group.  Later, Jouret also founded the Order of the Solar Temple also known as the Order of the Solar Tradition) with Joseph Di Mambro in 1984.  He committed suicide in the Swiss village of Salvan in October 1994, leading to a mass suicide of his followers.
Answer: Marshall Herff Applewhite, Jr.