Biography:

This band had a total of 4 eras (one for each album):
Bullets era:

Revenge era:
This era was called "Revenge" as a short version of the album's name (Three cheers for sweet revenge). Three Cheers for Sweet Revenge is the second studio album by American rock band My Chemical Romance, released on June 8, 2004 by Reprise Records. With this album, the band produced a cleaner sound than that of their 2002 debut I Brought You My Bullets, You Brought Me Your Love. It was the band's final release to feature drummer Matt Pelissier, who would later be replaced by Bob Bryar.
The album was a success for both the band and the label, The record produced several radio singles and popular MTV videos, including "I'm Not Okay (I Promise)," "Helena," and "The Ghost of You." The four singles from the album included "I'm Not Okay (I Promise)", "Helena", "The Ghost of You", and in the United Kingdom, "Thank You for the Venom". It was certified platinum less than a year after its release, and has sold over three million copies in the United States. The album opener "Helena" has been referred to as an "album highlight and smash hit". Gerard has claimed that the song "shaped what the album is about" and "revealed their darkside" in comparison to the first single. Its lyrics mourn the loss of Gerard and Mikey's grandmother, Elena Lee Rush, and was their first entry into the top 40. Track list
Black parade era:
This era was called Black Parade as a short version of the album's name (The Black Parade).
This era was called "Black Parade" as a short version of the album's name (The black parade). The Black Parade is the third studio album by American rock band My Chemical Romance. Released in Europe on October 20, 2006, through Reprise Records, it was produced by Rob Cavallo, known for having produced multiple albums for the Goo Goo Dolls and Green Day. It is a rock opera centering on a dying character with cancer known as "The Patient". The album tells the story of his apparent death, experiences in the afterlife, and subsequent reflections on his life. It is the band's only studio album to feature drummer Bob Bryar before his departure in 2010.
The album also saw the creation of the alter-ego band, The Black Parade. My Chemical Romance performed the album live in costume as the Black Parade until their October 7, 2007, Mexico City performance.[5][6] On stage, the band donned black marching uniforms similar to those worn by The Beatles for the album Sgt. Pepper's Lonely Hearts Club Band (1967). The live performance was theatrical, with Way assuming the character of a member of The Black Parade. Danger days era: