Atlus

Background
Atlus (アトラス) is a Japanese video game developer, publisher, arcade manufacturer and distribution company based in Tokyo. It was founded in April 1986 and originally existed until 2010, when it was merged into Index Corporation as a publishing brand. The brand was bought by Sega in 2013 and the company behind it was revived the following year.

Atlus is best known for the Megami Tensei video game series and its many spin-offs, including the Persona, Etrian Odyssey and Trauma Center series, as well as Print Club (Purikura) arcade machines.

1st Logo (November 24, 1989-2013)
Logo: We see a still version of the company logo on a black or white background, which fades in, then fades out.

FX/SFX: None.

Music/Sounds: None.

Availability: Can be seen on most games produced by the company, starting as an in-credit version on the Japanese version of Kwirk named Puzzle Boy (overseas versions omit it this logo in favor of their local publishers). The first time it was used as a full logo was in the arcade version of BlaZeon.

2nd Logo (1992-1995)
Logo: On a black background, the letters of the company logo appear one at a time, rotating once in a clockwise direction as they appear. The logo has a more metallic color compared to its predecessor.

FX/SFX: The letters appearing and rotating.

Music/Sounds: None.

Availability: Seen on several 16-bit era games released by the company, such as Shin Megami Tensei, Power Instinct, and GP-1, among others.

3rd Logo (October 20, 1995-April 16, 1999)
Logo: On a black background, we see several blocks (which are actually letters to "ATLUS") with  and  lights floating around them. The blocks pass by at different angles as the lights float into them and color them. We then zoom out to see the completed Atlus logo, followed by the logo shining.

FX/SFX: The blocks and the lights.

Music/Sounds: Several whoosh sounds as the logo starts, followed by a synthesized rock theme as the logo forms, ending with a warbling sound as the logo shines.

Availability: Can be seen on PlayStation and Saturn games during the time period, such as Revelations: Persona, High Velocity, Peak Performance, and Guilty Gear.

4th Logo (June 24, 1999-June 27, 2003)
Logo: TBA.

FX/SFX: The wormhole, the letters flashing, the lightning rays and the logo shining.

Music/Sounds: A wobbly synth while various sound effects play as the logo progresses, ending on a deep synth note with a small low note as the logo shines.

Availability: Can be seen on late Playstation and early Playstation 2 games, starting with Persona 2: Innocent Sin and last seen on Maken Shao: Demon Sword. Don't expect this to appear on any of the Shin Megami Tensei: Nocturne versions as they use the 1st logo instead.

5th Logo (Early 2010s)
Logo: TBA.

FX/SFX: TBA.

Music/Sounds: TBA.

Availability: Common.