A demon is a malevolent being in mythology or occultism.

Demon may also refer to:

Bullet for My Valentine are a Welsh heavy metal band from Bridgend, formed in 1998. The band is composed of Matthew Tuck (lead vocals, rhythm guitar), Michael Paget (lead guitar, backing vocals), Jason James (bass guitar, backing vocals), and Michael Thomas (drums). They were formed under the name Jeff Killed John and started their music career by covering songs by Metallica and Nirvana. Jeff Killed John recorded six songs which were not released; two of these tracks were reworked later in their career as Bullet for My Valentine. Financial difficulties dictated the name change, which was followed by a change in music direction. In 2002, the band secured a five-album deal with Sony BMG. The band has stated that their music is influenced by classic heavy metal acts such as Metallica, Iron Maiden, and Slayer. The band is part of the Cardiff music scene.

Bullet for My Valentine's debut album, The Poison, was released on 3 October 2005 in the United Kingdom and on 14 February 2006 in the United States to coincide with Valentine's Day hence their band name. The album entered the Billboard 200 in the US at number 128. It was certified Gold by the Recording Industry Association of America. The band made appearances at the Download Festival and Kerrang! XXV, and undertook a US tour with Rob Zombie. Bullet for My Valentine's second studio album, Scream Aim Fire, was released on 29 January 2008 and debuted at number four on the Billboard 200. The band's third album, Fever, was released on 26 April 2010 and debuted at number three on the Billboard 200. The band has sold over one million albums in the United States and nearly 2,500,000 albums worldwide and are the most-successful act in the Kerrang! Awards category of "Best British Band" with three wins.

Carl Edward Sagan ( /ˈseɪɡɪn/; November 9, 1934 – December 20, 1996) was an American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator in astronomy and natural sciences. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. He advocated scientifically skeptical inquiry and the scientific method, pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).

Sagan is known for his popular science books and for the award-winning 1980 television series Cosmos: A Personal Voyage, which he narrated and co-wrote. The book Cosmos was published to accompany the series. Sagan wrote the novel Contact, the basis for a 1997 film of the same name.

Carl Sagan was born in Brooklyn, New York, to a Ukrainian Jewish family. His father, Sam Sagan, was an immigrant garment worker from Kamenets-Podolsk, Ukraine; his mother, Rachel Molly Gruber, a housewife. Carl was named in honor of Rachel's biological mother, Chaiya Clara, in Sagan's words, "the mother she never knew." Sagan graduated from Rahway High School in Rahway, New Jersey, in 1951.

Charlie Cho Cha Lee (曹查理), a famous male actor in Hong Kong pornography films, especially during the 1980s. His over-acting approach can be regarded as one of the trademarks of Hong Kong soft porn films. He also worked in mainstream films, such as the Jackie Chan feature Police Story.

Army of the Pharaohs (AOTP or A.O.T.P.) is a hip hop supergroup originating from Philadelphia, Pennsylvania, formed by Jedi Mind Tricks MC, Vinnie Paz in 1998.

The original incarnation of the group included five MCs: Vinnie Paz, Chief Kamachi, Esoteric, Virtuoso and Bahamadia, along with Jedi Mind Tricks producer Stoupe the Enemy of Mankind and producer/DJ 7L (of 7L and Esoteric fame). The group released their debut EP/single "The Five Perfect Exertions" b/w "War Ensemble" in 1998. Both tracks were later included on JMT's 2000 album Violent by Design; with "The Five Perfect Exertions" being remixed into "Exertions Remix", and both "Exertions" and "War Ensemble" shedding Chief Kamachi's appearance. The Army of the Pharaohs project was put on the back-burner while JMT's career took off.

The group wouldn't return until 2005 without Virtuoso and Bahamadia. The group was now composed of Paz, Kamachi, 7L & Esoteric, Outerspace, Apathy, Celph Titled, Reef the Lost Cauze, Des Devious, Faez One and King Syze. After years of anticipation, the group recorded their debut album, The Torture Papers. It was released in March 2006 on Babygrande Records. The album was produced by AOTP affiliates such as DC the MIDI Alien, Undefined, Beyonder, Loptimist, and German producer Shuko. The album featured the single "Tear It Down" b/w "Battle Cry", the former featuring a music video, and the latter was a posse cut featuring nine of the group's then ten members. The album debuted in the top 50 on Billboard's Top Independent Album chart, and hit #42 on the magazine's Heatseekers chart. An unofficial continuation of The Torture Papers soon began circulating around the internet called The Bonus Papers. It was composed of tracks not released on the album.