Hades (/ˈheɪdiːz/; Ancient Greek: or Ἀΐδης, Háidēs) is the sixth single album, and the second part of the VIXX 2016 CONCEPTION trilogy, followed by Kratos and preceded by Zelos, by the South Korean boy band VIXX. The album was released on August 12, 2016 under the label of Jellyfish Entertainment. The song "Fantasy" was used to promote the album.

For every song, a different themed God appears. We're preparing a song and performance that suits them.

On March 29, 2016, Jellyfish Entertainment released the Conception Art Film, which signaled the start of their year-long project and trilogy VIXX 2016 CONCEPTION, through which the group would show their wide musical and conceptual spectrum and would be themed around the gods that appear in Greek mythology. An official Instagram for the project was also created at that time. On April 10, 2016, VIXX released the opening trailer of 2016 CONCEPTION, and nine days later on April 19th released the first album in the trilogy, Zelos which is based upon the god of the same name.

On August 1, 2016, VIXX revealed that the second album would be Hades, which is based on the God Hades; who was the ancient Greek chthonic god of the underworld. On August 2, VIXX began releasing teasers for the album, On August 5, 2016, VIXX revealed the track list of the album, it was also announced that the album would come in two versions, a regular version and a Kihno version. The regular version would come with the CD, 68 page photobook, photo card and poster whilst the Kihno version would come with the Kihno card, post card with printed autograph, a set of 31 photocards and a poster. On August 5, 2016, the group revealed the Hades Concept Film on Naver TV Cast, and on the following day released a video music spoiler to the title song "Fantasy" which features VIXX member Leo playing Beethoven's "Moonlight Sonata". On August 9th, VIXX revealed a highlight medley of the songs featured in the album, and on the following day released a teaser of the music video. The music video for "Fantasy" was released on August 14, 2016. "Fantasy" has a darker theme that emphasizes the concept of Hades, Greek god of the Underworld, unlike the first 2016 CONCEPTION release that was conceptualized around Zelos, representative of zeal and jealousy.

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